AMA Manual of Style 11th edition was published on 2020. The style was created for use in JAMA (Journal of the American Medical Association)
Recommended resources for AMA Manual Style guidelines
This guide includes some basic and common citation practices under the American Medical Association (AMA) style. AMA is primarily used to cite reference in medical and health sciences disciplines. Consult the full AMA Manual of Style for more detail on citing, referencing, writing, and styling.
Unlike other publication manuals, the AMA Manual of Style provides a range of acceptable citation practices, explains the purpose of each practice, and allows the writer/editor to make choices that make sense for their specific project. This is because AMA manual is primarily designed to support authors publishing in journals. Therefore it is recommended to consult with your instructor, publisher or department for more guidelines on specific AMA formatted citations and layouts. AMA recommends that whatever style is followed consistency throughout the document is critical. The examples here include only the most basic and general AMA citation rules.
Key Features
Quick Intro Video on AMA Citation Style created by Arizona State University
Specific instructions regarding title page format, page numbers, headings, font style and size, and margins are not stated in the AMA manual. Please ask your instructor for their preferences.
Typical Overall Appearance
Page Header
AMA Style Standard Document Elements
Title Page
Some journals require a title page but not all, AMA style does not specify a font size or type but they do offer recommendations for content. Please note that AMA primarily focus is for authors publishing in journals not student papers so ask your instructor for specific preferences. The following are components recommended for journal publications.
Abstract
Abstracts may or may not be required for your writing assignments, ask your instructor for clarifications.
Headings
Headings are use to divide and subdivide the paper to make it easy for the reader. However headings style vary among journal publications and instructor preferences so always double check. A typical division of sections for research studies is the IMRAD ( introduction, methodology, results, and discussion or conclusion).AMA does not specify formats for headings but make sure to be consistent throughout the paper.
In-text citations are use to tell your reader where you got the original information. When you use facts that are not common knowledge or from your original thought. In-text citation are needed for directly quotes, summarized and paraphrased information, or even when you use an idea from someone else. When in doubt, err on the side of caution, and cite. See section 3.6 of AMA for more in-text citation information.
Superscript
AMA style uses superscript Arabic numerals to number each of the sources in your text, tables, or figures. The sources are numbered consecutively and refer to the sources listed on the reference list.
The superscript1 occur at the end of the clause in which you used the information. They occur outside “quotation marks,”2 commas,3 (parentheses)4 and full stops.5 However, they occur inside semicolons6; and colons7: There is no space between the last letter or punctuation mark and the superscript number.
AMA recommends that you do not place a superscript reference citation immediately following a number, and advises that you revise the sentence to prevent any possible confusion with an exponent.
Same Citation
Citations should be numbered sequentially; however, once you have given a source a number, it will keep that number throughout your paper. So, if you use your first source again, no matter how often you use it, it is still 1.
Multiple Citations at a Time
Use commas to show that more than one work is being cited, and use hyphens for several works that would be numbered sequentially.
Example: The side effects can have implications for the patient's mental health, as numerous studies have shown.1,3,6-9
Direct Quotations
You should mostly be paraphrasing which does not require the use of page numbers, but they can be used if you feel it is necessary for clarification or if instructor indicates you to do so. content and only use a direct quote if the exact wording is important and necessary. Paraphrasing, does not require to use page numbers, but they can be used if you feel it is necessary for clarification or if instructor indicates it.
Use direct quotes sparsely and only if the exact wording is important and necessary. When you use direct quotes you must put the quote in "quotation marks" and use a page number next to the in-text citation.
Example: Rey's support of the Mad Dog theory is equivocal, and he states "I’m not defending Mad-doggery because I believe it."3(p125)
Author Names
AMA style does not require you to add author name in the text but if you choose to add author names.
Example: Abbott et al2 reported on the survey...
Secondary Citations
A secondary citation is created when an author is cited from within another author's work. It is always preferable to read and cite the original work, and every effort should be made to obtain it. If the original source cannot be obtained, cite the original source, rather than the secondary source in the text of your paper.
An example would be if Acheson has cited Cauley, but you have not seen the work by Cauley the in-text would be as follow: Cauley et al1 reported that the fracture risk among women...
In the reference list, include the work by Acheson after the work by Cauley and include the text ‘Cited by’
Example: Cauley JA, Lui L-Y, Ensrud KE, et al. Osteoporosis and fracture risk in women of different ethnic groups. JAMA. 2005;293(17):2102-2108. Cited by: Acheson LS. Bone density and the risk of fractures: should treatment thresholds vary by race [editorial]? JAMA. 2005;293(17):2151-2154
Parenthetical Citations
Parenthetical citations should ONLY be used for sources that do not occur in the references list, such as unpublished material, personal communications, and news articles. These citations may or may not include a title or author, but should include page numbers and, if possible, a DOI or URL. In the case of personal communications in-text citations should be in parentheses and include the name, affiliation, and highest academic degree(s) of the person who sent the message and the date the message was sent. It also must clearly indicate whether the communication was oral or written and include online email.
Example: Similar findings have been noted by M. J. Lee, MD (email communication, March 2020).
The AMA style guide does not give specific instructions for the layout of the reference list, but proper citation format of various types of sources are listed in sections: 3.2 3.3, 3.13.8, 3.13.9
Basic Guidelines
Reference lists are in numerical order, based on the order in which the sources were first cited in text
Use regular numbers--not superscript in the reference list
List each reference only once regardless of how many times it is cited in the text of the document
Each reference is divided with periods into bibliographic groups; each bibliographic group contains bibliographic elements, which may be separated using the following punctuation marks:
Books (See section 3.12 for more detailed examples)
Minimum accepted data for book references
DOI are digital object identifiers many online books have assigned DOI's which provide a persistent link to the item. Use the https://search.crossref.org/ to locate it in case if you cannot find it in the actual book or database.
Example: Print Book
1. Riegelman RK, Kirkwood B. Public Health 101: Healthy People--Healthy Populations. 2nd ed. Jones & Bartlett Learning; 2015.
Example: Online Book
2. Fine AH. Handbook on Animal-Assisted Therapy: Theoretical Foundations and Guidelines for Practice. 3rd ed. Elsevier Science & Technology, 2010. Accessed July 20, 2020. https://ebookcentral.proquest.com/lib/hpu-ebooks/detail.action?docID=629941
Journal Articles (See section 3.11 for more detailed examples)
Minimum accepted data for journal articles
Journal titles in citations are abbreviated according to the National Library of Medicine (NLM) and Medical Subject Headings (MeSH). The best way to find these abbreviations is through the NLM Catalog.
DOI are digital object identifiers many online journal articles have assigned DOI's which provide a persistent link to the item. Use the https://search.crossref.org/ to locate it in case if you cannot find it in the actual article or database. (Note: older articles may not have a DOI)
Example: Print or Interlibrary Loan Journal Article
3. Moldofsky H. Sleep, neuroimmune and neuroendocrine functions in fibromyalgia and chronic fatigue syndrome. Adv Neuroimmunol. 1995;5(1):39-56.
Example: Online Journal Article with DOI
4. Fischer MA, Stedman MS, Lii J, et al. Primary medication non-adherence: analysis of 195,930 electronic prescriptions. J Gen Intern Med. 2010;25(4):284–290. doi:10.1007/s11606-010-1253-9
Websites (See section 3.15.3 for more detailed examples)
Minimum accepted data for websites
Example: Website
5. Information for physical therapy consumers. The American Physical Therapy Association. Published November 2007. Accessed September 17, 2008. http://www.apta.org/Content/NavigationMenu/Consumers/consumer1.html