AMA Citation Style

References to a journal article include:

• Authors’ surnames and initials (the names of all authors should be given unless there are more than 6, in which case the names of the first 3 authors are used, followed by “et al”)
• Title of article and subtitle, if any
• Abbreviated name of journal*
• Year (or online publication date [month and day, year] if article is published online first and has yet to appear in a paginated issue or is published in an online-only journal)
• Volume number
• Issue number
• Part or supplement number, when pertinent
• Location (page[s] or e-locator)
• DOI (if supplied)

*Journal names are abbreviated in references. Abbreviate according to the listing in the National Center for Biotechnology Information (NCBI) NLM Catalog database.

From AMA Manual, 11th ed., Ch. 3.11 References to Journal Articles.

References to an online journal article include:

• Authors’ surnames and initials (the names of all authors should be given unless there are more than 6, in which case the names of the first 3 authors are used, followed by “et al”)
• Title of article and subtitle, if any
• Abbreviated name of journal (see 13.10, Abbreviations, Names of Journals)
• Year (or online publication date [month, day, year] if article is published online first and has yet to appear in a paginated issue or is published in an online-only journal)
• Location (pagination)
• DOI (if a DOI is not available for an online journal article, a URL and accessed date may be used; do not include a URL and accessed date for articles for which a DOI is available)
• Accessed [date]
• URL (verify that the link still works as close as possible to publication)

From AMA Manual, 11th ed., Ch. 3.11.4 Online Journal Articles, Preprints, and Manuscripts.

Print Journal Reference

Janda JM, Abbott SL. The genus Aeromonas: taxonomy, pathogenicity, and infection. Clin Microbiol Rev. 2010;23(1):35-73.

Online Journal Reference

Wang G, Hu FB, Mistry KB, et al. Association between maternal prepregnancy body mass index and plasma folate concentrations with child metabolic health. JAMA Pediatr. 2016;170(8):e160845. doi:10.1001/jamapediatrics.2016.0845