How to Cite in Vancouver Format: Step-by-Step Guide
The Vancouver citation style is a numeric system commonly used in medicine and the physical sciences. It assigns a number to each source in the order it is cited and lists full references numerically in the reference list. This guide explains the rules, provides examples for common source types, and gives practical tips to format citations correctly.
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Introduction — What Vancouver Is and Who Uses It
Vancouver is a numeric reference style endorsed by the International Committee of Medical Journal Editors (ICMJE). It is widely used in biomedical journals, health sciences, and many clinical disciplines. The main features are numbered in-text citations and a numbered reference list ordered by appearance.
Vancouver focuses on concise in-text markers and full bibliographic details in the reference list. It prioritizes consistency, abbreviated journal titles (Index Medicus), and compact author formatting.
General Rules — Key Formatting Rules
- Number citations sequentially in the text as they appear. Use Arabic numerals (1, 2, 3) in square brackets
[1]or as superscripts1, depending on journal requirements. - Order the reference list numerically by citation order, not alphabetically.
- List author surnames followed by initials without punctuation (e.g., Smith J, Doe AB).
- If there are six or fewer authors, list them all. If more than six, list the first six followed by
et al. - Use sentence case for article and chapter titles. Use journal title abbreviations per Index Medicus.
- Include DOI when available. Provide URLs and access dates for web resources if required by the publisher.
How to Cite by Source Type
Below are step-by-step formats and clear examples using code-style formatting. Adjust punctuation according to specific journal instructions, but the examples are standard Vancouver style.
1. Journal Article
Format: Author(s). Title of article. Abbreviated Journal Title. Year;Volume(Issue):page range. DOI (if available).
Example:
Smith J, Brown P, Lee A. Impact of exercise on cardiovascular risk. J Cardiol. 2020;15(4):234-9. doi:10.1000/jc.2020.015
Actionable tip: Abbreviate journal titles using PubMed/Index Medicus conventions and always include the DOI when present.
2. Book
Format: Author(s). Title of book. Edition (if not 1st). Place of publication: Publisher; Year.
Example:
Green R, Harris T. Clinical pharmacology. 3rd ed. London: Medical Press; 2018.
Actionable tip: If the publisher location is not required by your target journal, omit it. Otherwise include city and publisher name exactly as printed in the book.
3. Website / Online Resource
Format: Author(s) or Organization. Title of web page. Site Name. Year [cited Year Month Day]. Available from: URL
Example:
World Health Organization. WHO Coronavirus (COVID-19) dashboard. World Health Organization. 2021 [cited 2021 Jul 10]. Available from: https://covid19.who.int/
Actionable tip: Always capture the access date and permanent URL. Use archived links if content is likely to change.
4. Book Chapter
Format: Chapter author(s). Chapter title. In: Editor(s), editors. Book title. Edition. Place: Publisher; Year. p. page range.
Example:
Jones M, Patel R. Hypertension management. In: White S, Black L, editors. Essentials of Internal Medicine. 2nd ed. New York: HealthPub; 2019. p. 102-15.
5. Conference Paper / Proceedings
Format: Author(s). Title of paper. In: Editor(s), editor(s). Title of conference proceedings; Year Month Day; Place. Place: Publisher; Year. p. page range.
Example:
Lopez K, Wang Y. New biomarkers in diabetes. In: Proceedings of the International Diabetes Conference; 2019 May 5-7; Tokyo, Japan. Tokyo: Conference Press; 2019. p. 45-52.
6. Government or Organization Report
Format: Corporate author. Title of report. Place: Publisher; Year. Report number (if any).
Example:
Centers for Disease Control and Prevention. Antibiotic use in the United States, 2020. Atlanta: CDC; 2020.
In-Text Citations — Rules and Examples
Use simple numeric markers for in-text citations. Place the number directly after the referenced material, usually after a comma or period depending on style guidelines.
Examples:
- Citation after a sentence: The new protocol reduced infection rates [1].
- Citation inside a sentence: Smith et al. reported increased survival rates [2].
- Multiple citations: Several studies support this finding [3,5,7].
- Range of citations: See earlier work [4–6] for details.
Actionable tip: Number assignments are based on first appearance only. If you cite Source A first and Source B second, A is [1] and B is [2] throughout the paper, even if you discuss B before A later.
Reference List — Formatting Rules and Example
The reference list in Vancouver style is ordered numerically by citation order. Each entry should be single-spaced with a hanging indent (if required by your document editor).
Key elements to include: author(s), title, publication data, and DOI/URL when available. Use initials for given names and abbreviate journal titles.
Example reference list (first 6 entries):
1. Smith J, Brown P, Lee A. Impact of exercise on cardiovascular risk. J Cardiol. 2020;15(4):234-9.2. Green R, Harris T. Clinical pharmacology. 3rd ed. London: Medical Press; 2018.3. World Health Organization. WHO Coronavirus (COVID-19) dashboard. World Health Organization. 2021 [cited 2021 Jul 10]. Available from: https://covid19.who.int/4. Jones M, Patel R. Hypertension management. In: White S, Black L, editors. Essentials of Internal Medicine. 2nd ed. New York: HealthPub; 2019. p. 102-15.5. Lopez K, Wang Y. New biomarkers in diabetes. In: Proceedings of the International Diabetes Conference; 2019 May 5-7; Tokyo, Japan. Tokyo: Conference Press; 2019. p. 45-52.6. Centers for Disease Control and Prevention. Antibiotic use in the United States, 2020. Atlanta: CDC; 2020.
Actionable tip: Use reference management tools or Rephrasely's citation generator to export references in Vancouver format. Manually check journal abbreviations and DOIs for accuracy.
Common Mistakes — Errors to Avoid
- Wrong ordering: Don’t alphabetize the reference list. It must follow citation order.
- Author formatting errors: Avoid including full first names or punctuation after initials; use initials without periods (e.g., Smith J, not Smith, John).
- Missing or incorrect DOIs/URLs: Always include a DOI when available and verify URLs for web resources. Broken links or missing DOIs reduce credibility.
- Inconsistent in-text markers: Use numeric markers consistently; don’t mix author-date citations with Vancouver numbering.
Actionable tip: Run a final check comparing in-text numbers with reference list numbers. Re-numbering often occurs during editing — use your citation tool to rebuild the list if you add or remove citations.
Practical Workflow: How to Apply This Now
1) As you write, insert placeholder numbers or use a reference manager to tag citations. 2) For each source, collect full bibliographic details (authors, title, journal/book, year, pages, DOI/URL). 3) Use a tool like Rephrasely’s citation generator to format references in Vancouver style and export them to your document.
Use Rephrasely’s AI writer to draft summaries or abstracts, the plagiarism checker to make sure all sources are properly cited, and the AI detector if you need to report on AI-assistance. The paraphraser and translator tools can help reword or translate citations and content while preserving meaning.
Final Checklist Before Submission
- Are in-text citation numbers sequential and matching the reference list?
- Are all author names and initials correct and formatted without extra punctuation?
- Are journal titles abbreviated correctly and DOIs included where applicable?
- Did you include access dates for web resources if required by the journal?
Resolve these items before submission to minimize editorial revisions.
Frequently Asked Questions
Do I use brackets or superscripts for Vancouver in-text citations?
Either is acceptable depending on journal or instructor preference. Square brackets [1] and superscripts 1 are both used. Follow the specific guidelines provided by the publisher or your department.
How do I cite more than six authors in Vancouver style?
List the first six authors followed by et al. Example: Smith J, Brown P, Lee A, Patel R, Wang Y, Lopez K, et al. Then complete the rest of the citation per source type.
Can I use Rephrasely tools to create Vancouver citations automatically?
Yes. Use Rephrasely’s free citation generator to format references in Vancouver style. You can also use the AI writer to assist drafting and the plagiarism checker to verify sources. The AI detector can help document AI usage if needed.