Vancouver Referencing Style Guide: Rules, Examples and How to Use It

When preparing a medical research paper, nursing assignment, pharmacy dissertation or manuscript for a health sciences journal, the referencing style matters as much as the accuracy of the information. Vancouver referencing style is widely used in these fields because it identifies sources with numbers rather than interrupting the text with author names and publication years.

Its central rule is straightforward: number each source in the order it first appears, use that same number whenever you cite it again, and arrange the reference list in numerical order. The details of each reference depend on the source type, while some formatting requirements can vary between journals and institutions. This guide explains the main rules with practical examples, including how to use Vancouver style in Microsoft Word.

What Is Vancouver Referencing Style?

Vancouver referencing style is a numbered citation system used mainly in medical, biomedical and health sciences writing. It takes its name from a 1978 meeting in Vancouver, Canada, where medical journal editors discussed common requirements for preparing manuscripts. The work later developed through the International Committee of Medical Journal Editors (ICMJE).

Instead of writing an author’s surname and publication year every time a source is mentioned, Vancouver assigns a number to each source. The number appears in the text, while the full publication details are provided in a numbered reference list at the end.

For example:

A study on medication adherence found that clear patient instructions can improve treatment understanding [1].

The corresponding reference appears as number 1 in the reference list. If you cite the same study again later, you use [1] again rather than assigning it a new number.

Vancouver is particularly relevant to students and researchers in medicine, nursing, dentistry, pharmacy, physiotherapy, public health and related disciplines.

Vancouver Referencing Style Rules and Guidelines

The easiest way to understand Vancouver is to learn how its numbering system works before looking at individual reference formats. Once the sequence is clear, the remaining rules become easier to apply.

1. Number sources in order of first appearance

Assign the first source you cite number 1, the next new source number 2, and continue in sequence. Do not arrange the final reference list alphabetically by author surname.

2. Reuse the original number

If you cite a source more than once, retain the number it received when it first appeared. A source does not receive a new number every time you mention it.

3. Use the citation format required by the journal

Vancouver citations commonly appear as superscript numbers, numbers in parentheses or numbers in square brackets.

For example: research has reported similar findings¹, research has reported similar findings (1), or research has reported similar findings [1]. These formats are not interchangeable in every publication. Follow the journal’s instructions.

4. Present author names consistently

Author names are generally written with the surname followed by initials, without full stops between initials. For example:

Sharma R, Iyer P, Das S.

The number of authors to list before using et al. can depend on the specific Vancouver implementation. A commonly used ICMJE/NLM convention lists the first six authors and adds et al. when there are more than six. Check the required guide rather than assuming every journal follows the same threshold.

5. Use standard journal title abbreviations

Journal titles are generally abbreviated according to recognised indexing conventions, such as those used by the National Library of Medicine (NLM). Do not create your own abbreviations. The NLM Catalog can help you identify the correct title abbreviation for indexed journals.

6. Include the publication details required for each source

A journal article, book, website and thesis do not use identical reference formats. Check which details apply to the source, such as the article title, journal name, year, volume, issue, page range, publisher, access date or DOI.

7. Check the target publication’s instructions

Vancouver is not a single, completely uniform template for every journal. Requirements can differ in citation punctuation, author listing, DOI presentation and other details. For a manuscript submission, the journal’s current author instructions take priority.

How to Use Vancouver Referencing Style

You can apply Vancouver referencing in a research paper by following the order in which you use sources. The process is easier if you maintain a running list of references while drafting rather than trying to number everything after the document is complete.

Consider this short example:

A researcher is preparing a paper on awareness of hypertension among adults. The introduction refers to a national health report, followed by a journal study and then a book on research methodology.

The first source receives number 1, the journal study receives number 2, and the book receives number 3. If the researcher cites the journal study again in the discussion, it remains reference 2.

A simplified passage might look like this:

Hypertension is an important public health concern in India [1]. Previous research has examined awareness and treatment practices among adults [2]. Research methodology texts also emphasise the importance of using consistent measurement procedures [3]. A later discussion of the same study would cite it as [2], not [4].

The reference list at the end would follow this order:

1. First source cited in the text.
2. Second source cited in the text.
3. Third source cited in the text.

This is the key difference between Vancouver and author-date systems such as APA or Harvard. In those systems, references are generally organised alphabetically by author surname; Vancouver follows citation order.

If you are learning how different systems organise citations, the Writing Style Guides page provides an overview of major academic and professional style guides.

Vancouver Referencing Style Examples

The format changes according to the type of material you are citing. The examples below show common source categories and the information generally required. They are illustrative templates, not references to actual publications. Adapt punctuation and other details to the instructions of your university or journal.

Source type	General structure
Journal article	Author(s). Article title. Abbreviated journal title. Year;volume(issue) range.
Book	Author(s). Book title. Edition. Place of publication: Publisher; Year.
Book chapter	Chapter author(s). Chapter title. In: Editor(s), editor(s). Book title. Place: Publisher; Year. p. page range.
Website	Author or organisation. Page title [Internet]. Publisher; publication date [cited date]. Available from: URL
Thesis	Author. Title [dissertation]. Place: Institution; Year.
Report	Organisation or author. Report title [Internet]. Place: Publisher; Year [cited date]. Available from: URL

A few points are worth remembering when using these formats:

• Include an edition statement when the book is not the first edition.
• Use the journal’s recognized abbreviation rather than shortening its name yourself.
• Include the DOI when required and available.
• For online material, provide the access or cited date when the selected Vancouver guide requires it.
• Do not add publication details that you cannot verify from the original source.

Vancouver In-Text Citation Examples

In-text citations connect a statement in your paper to its full reference. Vancouver uses Arabic numerals, but their appearance depends on the journal or institution’s preferred format.

Single-source citation

Square brackets:

The study reported an improvement in patient understanding after the intervention [1].

Parentheses:

The study reported an improvement in patient understanding after the intervention (1).

Superscript:

The study reported an improvement in patient understanding after the intervention¹.

Multiple sources

When a statement is supported by several sources, the relevant numbers can be grouped:

• Consecutive references: [1–3]
• Non-consecutive references: [1, 3, 5]

For example:

Several studies have examined the relationship between physical activity and cardiovascular health [1–3].

Other researchers have reported similar findings in different populations [1, 4, 6].

Repeated citation

Suppose you cite a journal article as [2] in the introduction. If you refer to that same article in the discussion, use [2] again. Do not assign it a new number.

Citation placement

Place the citation close to the statement it supports. If a sentence contains several claims supported by different sources, make the relationship between each claim and its citation clear.

The most important point is consistency. Do not switch between superscript, parentheses and square brackets in the same document unless the publication’s instructions specifically require different treatment in different contexts.

Vancouver Reference List Format

The reference list contains the complete publication details of the sources cited in your document. It usually appears after the main text and is arranged numerically according to the first appearance of each source.

For example:

1. First source cited in the introduction.
2. Second source cited in the introduction.
3. Third source cited in the methods section.

It is not arranged alphabetically by the authors’ surnames.

A reference list should also be checked for completeness. Every in-text citation should have a corresponding reference entry, and every entry in the list should be cited in the document unless the relevant guidelines specifically ask for additional material.

Before submitting a paper, check:

• Whether the reference numbers follow the order of first citation.
• Whether repeated sources retain their original numbers.
• Whether author names and initials match the original publication.
• Whether journal abbreviations are accurate.
• Whether volume, issue and page details are complete.
• Whether DOI links and website URLs lead to the correct sources.

For medical and biomedical manuscripts, the ICMJE recommendations and the NLM’s Citing Medicine guide are useful references for checking bibliographic details. However, the journal’s own instructions should be consulted before final submission.

How to Cite a Journal Article in Vancouver Style

Journal articles are among the most frequently cited sources in medical and scientific research. A standard journal reference generally includes the authors, article title, abbreviated journal title, publication year, volume, issue, page range and DOI, where applicable.

General format

Author AA, Author BB. Title of article. Abbreviated Journal Title. Year;volume(issue) range. DOI

Illustrative example

Sharma R, Iyer P. Awareness of preventive healthcare practices among adults. Indian J Public Health. 2025;69(2):120-5. https://doi.org/10.xxxx/xxxxx

Note: This is a fictional example for demonstrating the format. The DOI is a placeholder, not a working identifier.

When preparing the reference, pay attention to the following details:

• List authors in the order in which they appear in the published article.
• Use the journal’s recognised abbreviated title.
• Separate the publication year and volume with a semicolon.
• Place the issue number in parentheses after the volume.
• Use a colon before the page range.
• Add the DOI in the form required by the journal or institution.

If the article has an electronic publication date or an article number instead of conventional page numbers, consult the journal’s instructions or an authoritative Vancouver reference guide for the appropriate format.

How to Cite a Website in Vancouver Style

Websites are common sources for public health reports, government statistics, institutional guidelines and online research resources. When citing a webpage, record enough information for readers to identify and locate the exact material.

General format

Author or Organisation. Title of webpage [Internet]. Place of publication: Publisher; publication date [cited Year Month Day]. Available from: URL

Illustrative example

Ministry of Health and Family Welfare. National health programme overview [Internet]. New Delhi: Government of India; 2026 [cited 2026 Nov 2]. Available from: https://example.gov.in/health-programme

Note: This is a fictional webpage and example URL. It is included only to demonstrate the structure.

When citing a website, remember to:

• Identify the individual author or responsible organisation, if available.
• Use the title of the specific webpage rather than only the website’s name.
• Include the publication or update date when available.
• Add the date you accessed or consulted the page when required.
• Provide the complete URL.

For Indian research papers, official sources such as government ministries, the Indian Council of Medical Research (ICMR), the National Health Mission and other recognised institutions may provide relevant material. Check that the page is current and that it directly supports the statement you are citing.

Vancouver Referencing Style for Research Papers

Vancouver is particularly useful in research papers where multiple sources need to be cited without repeatedly interrupting the discussion with author-date information. It is commonly encountered in medicine, nursing, dentistry, pharmacy, public health and other health-related disciplines.

For an Indian medical student preparing a dissertation, for example, the style may be required by the university, department or research supervisor. A researcher submitting a paper to an international medical journal may also be asked to follow Vancouver or a journal-specific variation of it.

A practical workflow can help prevent citation errors:

1. Check the required style first: Confirm whether your university or journal asks for Vancouver, ICMJE or a particular numbered-reference format.
2. Collect source details: Record the authors, title, publication information, DOI or URL as soon as you select a source.
3. Insert citations while writing: Assign numbers in order of first appearance rather than numbering all sources at the end.
4. Maintain one reference list: Keep the full details of each source in the same numerical order.
5. Review the complete document: Check that citations and references match after moving, adding or deleting paragraphs.

Vancouver vs AMA Referencing Style

Vancouver and AMA are both numbered referencing systems commonly used in medical and health sciences publications. They share the basic principle of assigning numbers to sources in order of first citation, but their formatting requirements are not identical.

The differences can involve citation presentation, author-list conventions, DOI formatting and other reference details. The correct choice depends on the requirements of the journal or institution.

For a closer comparison, see the dedicated Vancouver vs AMA section. It explains how the two systems differ and when each may be required.

Vancouver Referencing Style Bibliography Format

The terms reference list and bibliography are sometimes used interchangeably in student assignments, but they do not always mean the same thing.

A reference list normally includes the sources cited in the document. A bibliography may also include material consulted during research but not directly cited. In Vancouver-style medical manuscripts, the usual requirement is a numbered reference list containing the sources cited in the text.

The format follows the same numerical sequence as the in-text citations. For example, if a book is the third new source mentioned in the paper, it appears as reference 3—even if its author’s surname would place it first in an alphabetical list.

A simplified reference list might look like this:

1. First journal article cited in the paper.
2. Second source cited in the paper.
3. Book cited later in the paper.
4. Online report cited after the book.

Do not alphabetise the entries unless your institution or publication specifically instructs you to use a different arrangement. Also, avoid adding uncited sources to a reference list when the assignment or journal asks only for cited references.

Vancouver Citation Format for Medical Research

Medical research often draws on different kinds of evidence, including clinical trials, systematic reviews, observational studies, clinical guidelines, government reports and patient information resources. Vancouver provides a consistent numbered system for identifying these sources.

For example, a paper examining diabetes care in India might cite:

• A national health report for background information.
• A clinical study for evidence about treatment outcomes.
• A systematic review for a broader assessment of existing research.
• A clinical guideline for recommended practice.

Each source receives a number when it first appears in the paper. The same number is retained wherever that source is cited again.

Researchers should pay particular attention to the reliability and accuracy of their references. A citation should support the statement beside it, and the reference details should be checked against the original publication or a dependable bibliographic database.

For journal submissions, consult the ICMJE recommendations and the journal’s author instructions. The NLM’s Citing Medicine guide is also useful when a source type or formatting detail needs closer examination.

How to Insert Vancouver Referencing Style in Word?

Microsoft Word includes several built-in citation styles, but Vancouver may not appear in the default style list. You can add a compatible Vancouver bibliography style file (.xsl) to desktop Word or use a reference manager such as Zotero, Mendeley or EndNote.

The steps below explain the custom-style approach. The exact installation process can vary with your Word version and operating system. Use a Vancouver stylesheet from a reputable source and check its output before relying on it for a submission.

How to Add Vancouver Style in Word on Windows

Step 1: Download a Vancouver XSL file

Find a Word-compatible Vancouver bibliography stylesheet with the .xsl extension. Make sure it is intended for Microsoft Word’s citation and bibliography feature—not a style file designed only for another reference manager.

Step 2: Close Microsoft Word

Save your documents and close all Word windows before installing the file.

Step 3: Open the Bibliography Style folder

Press Windows + R on your keyboard. Enter the following path and press Enter:

%appdata%\Microsoft\Bibliography\Style

If the folder does not exist, create the missing folders under Microsoft\Bibliography.

Step 4: Copy the XSL file

Copy the downloaded Vancouver .xsl file into the Style folder. Check that Windows has not added an extra extension such as .txt.

Step 5: Restart Word and select Vancouver

Open Microsoft Word and go to:

References → Citations & Bibliography → Style

Look for Vancouver in the style dropdown. If it appears, select it before adding citations.

Step 6: Insert citations and the reference list

Place your cursor where you want a citation. Select:

References → Insert Citation → Add New Source

Enter the source details and save them. Repeat for other sources. When you have finished, place the cursor where the reference list should appear and use the Bibliography option under the References tab.

Quick Table: How to Add Vancouver Style in Word on Windows

Steps	Process	Notes
1	Download a Vancouver XSL file	Must be a proper Word bibliography stylesheet (.xsl), not a Zotero/Mendeley style.
2	Close Microsoft Word	Recommended so Word can load the new style properly.
3	Open the Bibliography Style folder	The path %appdata%\Microsoft\Bibliography\Style is the standard and most reliable location.
4	Copy the XSL file	Important to check that the file is truly named Something.xsl and not Something.xsl.txt.
5	Restart Word and select Vancouver	The style appears under References → Style.
6	Insert citations and the reference list	Standard Word citation workflow.

How to Add Vancouver Style in Word on Mac

The process for Word on Mac is different because the bibliography stylesheet is stored inside the Microsoft Word application package in many desktop installations.

Step 1: Download a compatible Vancouver XSL file

Obtain a Word-compatible .xsl stylesheet from a reputable academic or technical source. Check that it supports the version of Word installed on your Mac.

Step 2: Close Microsoft Word

Save your work and quit Word completely.

Step 3: Open the Microsoft Word application package

1. Open Finder.
2. Select Applications.
3. Locate Microsoft Word.
4. Right-click the Word application and select Show Package Contents.

Step 4: Locate the Style folder

Open the following folders inside the application package:

Contents → Resources → Style

You should see existing .xsl bibliography style files in this folder.

Step 5: Copy the Vancouver XSL file

Copy the downloaded Vancouver .xsl file into the Style folder. macOS may ask for administrator permission because you are modifying files inside the application package.

Step 6: Restart Word and check the style list

Open Word again. Go to the References tab and open the citation Style dropdown. Check whether Vancouver is available.

Step 7: Add sources and generate references

Select Vancouver, insert your sources through the citation tools and generate the reference list using Word’s Bibliography option.

Quick Table: How to Add Vancouver Style in Word on Mac

Steps	Process	Notes
1	Download a compatible Vancouver XSL file	Must be a proper Word .xsl stylesheet.
2	Close Microsoft Word	Recommended before making changes.
3	Open the Microsoft Word application package	Right-click → Show Package Contents is the right method.
4	Locate the Style folder	Path is usually: Contents → Resources → Style
5	Copy the Vancouver XSL file	macOS will ask for administrator permission.
6	Restart Word and check the style list	The style should appear under References → Style.
7	Add sources and generate references	Standard citation workflow.

Important: The application-package method may need to be repeated after a Microsoft Word update, and the folder structure can differ between versions. If the style does not appear or produces incorrect references, use a compatible reference manager instead. Word for the web does not support this desktop XSL installation method.

What If Vancouver Does Not Appear in Word?

If you cannot find Vancouver in the style dropdown after installation, check the following:

• Word was completely closed before the file was copied.
• The stylesheet is a valid Word bibliography .xsl file.
• The file is in the correct Style folder.
• The filename does not end in .xsl.txt.
• You restarted Word after installation.

Even when the style appears, inspect the generated citations and references. A stylesheet may produce numbered citations without matching the precise requirements of your journal.

Conclusion

Vancouver referencing becomes easier once you understand its central numbering system. Assign a number when a source first appears, reuse that number whenever you cite the same source, and keep the reference list in the same order.

The finer details deserve equal attention. Journal abbreviations, author names, online publication details and DOI formats can vary across implementations. Before submitting an assignment, dissertation or medical research manuscript, compare your references with the guidelines required by your institution or journal. Accurate referencing makes your research easier to verify and helps readers trace the evidence behind your work.

Frequently Asked Questions