“References serve 3 primary purposes—documentation, acknowledgement, and directing the reader to additional resources. Authors may cite a reference to support their own arguments or lay the foundation for their theses (documentation); as a credit to the work of other authors (acknowledgment); or direct the reader to more detail or additional resources (directing or linking).” AMA Manual of Style, 11th ed. (Chapter 3: References)
Author last name Initials. Title of the Book. #th ed. Publisher's Name; year.
If an edited volume, put eds. after the name.
Example:
Postesr M. Information Now: Impatient Users. 2nd ed. Random University Press; 2006.
List all authors and editors up to six. Use et. al. after six.
Example: Poster MR, Bob D, Jones RC. eds.
Chapter Author last name Initials. Title of the Chapter. In: Book Author last name Initials. Title of the Book. #th ed. Publisher's Name; year: page numbers
If more than six authors for a book where you are only citing the chapter, list the first three and the use et.al.
Example:
Pui AR, Rob M, June MK. Disorders of calcium and phosphorus homeostasis. In: Dipso JT, Albert RR, Young WC, et al, eds. Mother of an Example. 7th ed. Memo graph Publications; 2022:89-106.
Include the DOI on the end of the citation if available. If no DOI, list the date Accessed and the url, if using a subscription based product please use the stable permilink.
Example:
DOI - https://doi.org/10.1037/0000168-000
Accessed date- Accessed January 10, 2022. http://book.xxx
Author last name Initial, 2nd author, 3rd author (if more then six, use et. al. after 3rd) Article title. Journal Title. Year; volume(issue):pages.
Example:
Cullen K , Bartholomew L , Parcel G. Girl Scouting: An effective channel for nutrition education. J Nutr Educ. 1997;29(2):86-91.
If DOI is available, use at the end of the citation.
Most journal titles are abbreviated. There are standards for how this is done, please see the abbreviation section of this guide.
One of the major hallmarks of AMA is the use of abbreviated journal titles. This makes AMA Style more complicated to learn than APA or MLA and complicates the use of citation management software greatly. It is still possible to use programs like Endnote or RefWorks, but you will often need to add the abbreviation to the imported record.
There are official rules for how each title is abbreviated in the manual but a fast way to find the correct abbreviation is to use PubMed. Journals indexed by PubMed will have the abbreviation listed in the database.
Keep in mind:
If the journal is not in PubMed it may be in section 13.10 of the manual OR you can construct the abbreviation manually.
To make an abbreviation, a simple trick is to use the PubMed catalog and look up other journals that share the same words in the title. Each title word is always abbreviated the same way. For example, if you want to know how to abbreviate the Journal of Education Policy, which is not itself in PubMed, you can look up any journal with the word education in the title and find that it is abbreviated Educ. Do the same for Policy and find it is spelled out and not abbreviated. So the correct format for this title would be J Educ Policy
Common Abbreviations:
AMA Manual of Style by 
