AMA Citation Style Guide
AMA Format: 11th Edition Citation Style Guide
AMA format is a numbered citation style used widely in medical and scientific publishing. Sources are identified in the text with reference numbers, commonly set as superscript Arabic numerals, and the full references are listed numerically in the order they are first cited rather than alphabetically.
This guide explains the practical rules you need most often: in-text citation numbers, reference-list order, author names, journal articles, books, websites, DOI use, PubMed records and journal-title abbreviations. For automatic formatting, use the AMA Citation Generator and review the retrieved metadata before submitting your work.
AMA format at a glance
| Element | AMA approach |
|---|---|
| In-text citations | Numbered references, commonly shown as superscript Arabic numerals |
| Reference-list order | Numerical order based on first citation in the text |
| Repeated source | Reuse the same reference number |
| Journal titles | Use standard abbreviated journal titles where required |
| DOI | Include it for journal references when available |
| Books | 11th edition no longer requires the publisher’s location |
| Current edition | AMA Manual of Style, 11th edition |
What is the current AMA style edition?
The current AMA Manual of Style: A Guide for Authors and Editors is the 11th edition. Oxford Academic lists the 11th edition as published in 2020, and the official online manual continues to receive corrections, policy changes and new guidance from the AMA Manual of Style Committee.
That distinction matters. You may see pages described as “AMA 2026,” but 2026 is not a new numbered edition. The underlying manual is still the 11th edition, with online updates applied over time. In May 2026, for example, the official updates page added guidance on short-form references for space-limited formats such as posters and slide presentations.
For edition-specific background, see our AMA 11th edition guide.
How AMA in-text citations work
AMA uses a numbered citation system. A source receives a number when it is first cited, and that number connects the statement in the text to the corresponding item in the reference list.
Use reference numbers instead of author-date citations
Unlike APA-style author-date citations, AMA does not normally place an author surname and publication year in parentheses. The citation is represented by a reference number.
Example:
The intervention was associated with improved outcomes.1
Number references in order of first appearance
If Smith is the first source you cite, it becomes reference 1. If Jones is cited next, it becomes reference 2. The reference list follows that same numerical order.
Reuse the original number when citing a source again
If reference 1 is cited again later in the document, it remains reference 1. Do not create a new reference-list entry merely because the same source appears in another paragraph.
Multiple citations
When several references support one statement, their numbers can be cited together. Consecutive references may be represented as a range where the publication or institution applying AMA style permits that presentation.
For placement, repeated references, page numbers and multi-source examples, read the dedicated AMA in-text citation guide.
How the AMA reference list is organized
The reference list is numerical, not alphabetical. Each entry is assigned the number used for that source in the text.
A simple reference list might begin:
- First source cited in the manuscript.
- Second source cited in the manuscript.
- Third source cited in the manuscript.
If you later move a source earlier in the manuscript, reference numbering may need to change. That is why our generator includes a numbered reference-list workflow rather than treating every citation as an isolated result.
See how to format an AMA reference page and numbered reference list for more detail.
AMA format for a journal article
A typical AMA journal reference contains the author or authors, article title, journal title or approved abbreviation, publication year, volume, issue where applicable, pages or article number, and DOI when available.
A practical pattern is:
Author AA, Author BB. Article title. Journal Abbreviation. Year;Volume(Issue):Pages. doi:DOI.
Example
Kingscott G. Technical translation and related disciplines. Perspectives. 2002;10(4):247-255. doi:10.1080/0907676x.2002.9961449.
The official 11th-edition References chapter specifically notes a recommendation to include a DOI for journal references when one is available.
See the complete AMA journal article citation guide.
Use the correct journal abbreviation
Medical and scientific journal titles are often abbreviated in references. The National Library of Medicine’s Citing Medicine guidance explains that significant words in a journal title are abbreviated while words such as articles, conjunctions and prepositions may be omitted.
For example, NLM gives transformations such as:
- The Journal of Biocommunication → J Biocommun
- La Pediatria Medica e Chirurgica → Pediatr Med Chir
Do not invent an abbreviation simply because it looks plausible. NLM points users to resources such as the NLM Catalog and the active PubMed title list for standardized journal-title information.
Our PubMed workflow can use the abbreviated title supplied in PubMed metadata when available, while still allowing the field to be reviewed. For more detail, see AMA and NLM journal abbreviations.
How DOI is used in AMA references
A DOI is a persistent identifier assigned to many scholarly works. In AMA 11th edition, the References chapter recommends including a DOI in a journal reference when one is available.
That makes DOI lookup particularly useful for citation generation. A DOI can help retrieve structured information such as title, authors, journal, year, volume, issue and pages from scholarly metadata services.
However, a DOI does not guarantee that every metadata field is perfect. Review the returned source details before copying the final reference.
On the AMA Citation Generator, you can paste either a DOI such as 10.1080/0907676X.2002.9961449 or a DOI URL.
How PubMed and PMID fit into AMA citation work
PubMed is especially important in medical and health-science research. Each PubMed citation has a unique PMID, which makes it useful for identifying the correct article before formatting the reference.
Our generator accepts:
- a bare PMID such as
39874211; - the form
PMID: 39874211; or - a PubMed article URL.
The goal is to retrieve the article metadata behind the PubMed record rather than cite the PubMed webpage as though it were the scholarly source itself.
AMA format for books
A book reference normally includes the author or editor, title, edition when relevant, publisher and publication year.
A simple pattern is:
Author AA. Book Title. Edition. Publisher; Year.
One notable 11th-edition change documented in the official References chapter is that the publisher’s location is no longer required in book references.
For details on authors, editions, edited works and online books, see the AMA book citation guide.
AMA format for websites
Website references need enough information to identify the specific page or resource you used. Depending on the source, relevant elements may include an individual or organizational author, page title, website name, publication or update date, access date and URL.
Web metadata is often less consistent than DOI or PubMed metadata. A webpage may omit an author, publication date or clear publisher. That is why a generated website reference should always be checked against the actual page.
Use the AMA website citation guide for examples involving organizational authors, missing dates and access dates.
AMA style covers more than journals, websites and books
The AMA Manual’s References chapter covers a broad range of material. Its current 11th-edition description includes examples for journal and book sources as well as reports, websites, databases, social media, podcasts, apps, interactive games, preprints, data repositories, conference proceedings, patents, package inserts and other specialized material.
AMAReferenceGenerator.com will expand source-specific support carefully. We do not want to publish a page or claim full automation for a source type until its formatting behavior has been implemented and tested.
AMA citation examples
Journal article
Author AA, Author BB. Article title. Journal Abbrev. 2026;25(4):120-128. doi:10.xxxx/xxxxx.
Book
Author AA. Book Title. 2nd ed. Publisher; 2026.
Website
Organization Name. Page title. Website Name. Published Month Day, Year. Accessed Month Day, Year. URL.
These are structural examples rather than substitutes for checking the current rule for your exact source. See the dedicated AMA citation examples page for additional worked examples.
Common AMA formatting mistakes
Alphabetizing the reference list
AMA references are normally numbered according to first appearance in the text. Alphabetizing them can break the connection between in-text numbers and the reference list.
Giving the same source a new number each time
A repeated citation should continue to point to the source’s original reference number.
Using a full journal title when an approved abbreviation is expected
Medical journal references commonly use standardized abbreviated titles. Check PubMed/NLM data or another authoritative source rather than abbreviating a title by intuition.
Leaving out a DOI when one is available
AMA 11th edition recommends including a DOI for journal references when available.
Trusting retrieved metadata without checking it
Even a correct DOI or PMID can be associated with incomplete or differently structured metadata. Review author names, dates, pages, article numbers and journal titles.
Following a generic guide instead of submission requirements
A journal, instructor, school or publisher may apply house-style requirements on top of AMA. Follow the instructions for the specific work you are submitting.
Using the AMA Citation Generator with this guide
The fastest workflow is to use the generator for metadata retrieval and formatting, then use this guide to verify the structure.
- Open the AMA Citation Generator.
- Paste the DOI, PMID, PubMed URL, ISBN, webpage URL or article title.
- Confirm that the correct source was found.
- Review the metadata.
- Correct missing or incorrect fields.
- Copy the reference or add it to your numbered list.
For details about data providers, duplicate handling and known limitations, read our citation-generator methodology.
AMA style vs journal or university requirements
The AMA Manual provides the style framework, but individual journals, universities, medical schools and publishers may impose additional submission rules. For example, a publication may specify its own reference limit, manuscript layout or treatment of particular unpublished materials.
Use AMA style as the underlying citation system, but always check the instructions for the destination of your manuscript or assignment.
AMA style can change between print editions
The official online manual is actively maintained. Oxford Academic states that the AMA Manual of Style Committee continuously updates policy guidance and posts changes as they are implemented.
This is important for a citation website. We should not assume that every rule remains frozen simply because the printed 11th edition dates from 2020. Content and generator behavior should be reviewed against current official updates where relevant.
Frequently asked questions about AMA format
Is AMA format the same as APA?
No. AMA uses a numbered reference system, while APA generally uses author-date citations in the text. The reference-list structures also differ.
Are AMA references alphabetical?
No. AMA references are normally numbered according to the order in which sources are first cited in the text.
Are AMA in-text citations superscript?
Superscript Arabic numerals are commonly used for AMA-style in-text reference numbers. Always check the instructions of the journal, university or publisher receiving your work.
Do I include a DOI in AMA?
For journal references, the 11th-edition References chapter recommends including a DOI when one is available.
Do AMA references use full journal names?
Medical references commonly use standardized abbreviated journal titles. NLM resources such as the NLM Catalog and PubMed title data are useful for checking abbreviations.
Is there an AMA 2026 edition?
No separate numbered 2026 edition is currently listed. The current manual is the 11th edition, published in 2020, with continuing updates to the online manual.
Can I use PMID to make an AMA citation?
Yes. PMID can identify a PubMed record, which can provide structured metadata for the underlying article. Our generator supports direct PMID and PubMed URL lookup.
Should I trust an AMA citation generator without checking the result?
No. Automated citation tools depend on external metadata that can be incomplete or inconsistent. Review the source details before submission.
