AMA Style Guide: Home

Websites

Include as much of the following information as possible:

Author(s), (or, if no author is available, the name of the organization responsible for the site). Title of the specific item cited (if none is given, use the name of the organization responsible for the site). Name of the website. URL [provide URL and verify that the link still works as close as possible to publication]. Published [date]. Updated [date]. Accessed [date].

Author

Funk C & Parker K. Women and men in STEM often at odds over workplace equity. Pew Research Center Social & Demographic Trends website. http://www.pewsocialtrends.org/2018/01/09/women-and-men-in-stem-often-at-odds-over-workplace-equity/. January 9, 2018. Accessed March 13, 2018. 

No Author

Food safety. Centers for Disease Control and Prevention website. https://www.cdc.gov/foodsafety/. Updated February 7, 2018. Accessed March 13, 2018.

Books

Author(s). Book Title. Edition number (if it is the second edition or above). City, State (or Country) of publisher: Publisher's name; copyright year.

Whole Book

Cueto M, Palmer, S. Medicine and public health in Latin America: a history. New York: Cambridge University Press; 2015. 

Book with Editor(s)

Erwin PC, Brownson RC, eds. Scutchfield and Keck's principles of public health practice. 4th ed. Boston, MA: Cengage Learning; 2017.

Chapter in a Book

Riegelman RK, Kirkwood B. Social and behaviorial sciences and public health. In: Riegelman RK, Kirkwood B, eds. Public health 101: Healthy people--healthy populations. 2nd ed. Burlington, MA: Jones & Bartlett Learning; 2015.

Ebook

Preedy VR, Watson RR. Handbook of disease burden and quality of life measures. New York: Springer Science. 2009. http://www.springerlink.com/content/978-0-387-78664-3. Accessed March 18, 2018.

Government or Agency Bulletins (Print)

References to bulletins published by departments or agencies of a government should include the following information, in the order indicated:

• name of author (if given)
• title of bulletin
• place of publication
• name of issuing bureau, agency, department, or other governmental division
• date of publication
• page numbers, if specified
• publication number, if any
• series number, if given.

Example

National Institutes of Health, US Department of Health and Human Services. NIH-Wide Strategic Plan, Fiscal Years 2016-2020: Turning Discovery Into Health. Bethesda, MD: National Institutes of Health; 2015.

Online Government Reports

Government Reports are treated the same as an electronic journal and book reference.

• Apply the same rules as journal style for articles and book style for monographs. 
• Include the published and updated date (if available) as well as accessed date

Example

National Cancer Advisory Board, National Cancer Institute, US Department of Health and Human Services. Cancer Moonshot Blue Ribbon Panel Report 2016. https://www.cancer.gov/research/key-initiatives/moonshot-cancer-initiative/blue-ribbon-panel#ui-id-3. Published October 17, 2016. Accessed March 23, 2018.

World Health Organization. World Health Statistics 2017: Monitoring Health for the SDGs, Sustainable Development Goals. http://www.who.int/gho/publications/world_health_statistics/en/. Published 2017. Accessed March 23, 2018.

Email and Personal Communications

In parentheses, include the name and highest academic degree(s) of the person who sent the message. Also Include the date of the communication and indicate whether it was in oral or written (including email) form. 

Email (In-text citation)

There have been no subsequent reports of toxic reactions in the exposed groups (Joan Smith, MD, email communication, March 29, 2004)

Email Listserve

The Editorial Committee of the World Association of Medical Editors (WAME) is preparing a statement on government embargoes and scientific exchange (Margaret A. Winker, MD, WAME listserve, February 25, 2004).

Personal Communication

In a conversation with H. E. Marman, MD (August 2005).…

According to a letter from H. E. Marman, MD, in August 2005.…

According to the manufacturer (H. R. Smith, oral communication, May 2005), the drug became available in Japan in January 2004.

• Author (if available)
• Title (italicized)
• Format (description of media is put in [ ] - e.g. [videotape])
• Location
• Publisher or distributor
• Year

Presented Paper/Poster

Author AA, Author BB. Title of the poster or paper. Paper/Poster presented at Conference Name; Month Year; City, State Abbreviation.

Liu S. Defending against business crises with the help of intelligent agent based early warning solutions. Paper presented at the Seventh International Conference on Enterprise Information Systems; May 2005; Miami, FL.

Published Proceedings

Author AA, Author BB. Title of the poster or paper. Title of the Journal Abbreviated; Volume(Issue):Abstract number/Page Numbers.

Herculano-Houzel S, Collins CE, Wong P, Kaas JH, Lent, R. The basic nonuniformity of the cerebral cortex. Proc. Natl. Acad. Sci. U.S.A.; 105: 12593-12598.

Theses and Dissertations

Titles of theses and dissertations are given in italics. References to theses should include the location of the university (or other institution), its name, and year of completion of the thesis. If the thesis has been published, it should be treated as any other book reference.

Example

Fenster SD. Cloning and Characterization of Piccolo, a Novel Component of the Presynaptic Cytoskeletal Matrix [dissertation]. Birmingham: University of Alabama; 2000.

Undeman C. Fully Automatic Segmentation of MRI Brain Images Using Probabilistic Diffusion and a Watershed Scale-Space Approach [master's thesis]. Stockholm, Sweden: NADA, Royal Institute of Technology; 2001.

Drug Databases & UpToDate

For some databases, like UpToDate, the author(s) of the section is/are listed. You should cite the author and name the editor if available. For database entries without authors, you can cite the database as the author.

Use following elements where applicable:

Author(s). Title of the database [database online]. Publisher's location (city, state, or, for Canada, city, province, country, or, all others, city, country): publisher's name; year of publication and /or last update. URL [provide URL and verify that the link still works as close as possible to publication]. Accessed [date].

Twitter - See the AMA Style Insider blog post

@AMAManual. Many now accept “data” as singular. However, JAMA & Archives Journals retain the use of the plural verb with “data.” http://t.co/auYSgGb. http://twitter.com/#!/AMAManual/status/94117252009431040. Posted July 21, 2011.

Reference List

• Items are listed numerically in the order they are cited in the text.
• Include up to six authors. If there are more than six, include the first three, followed by et al. If no author is given, start with the title.
• Authors: use initials of first and second names with no spaces or punctuation.

In-Text Citations

• Each reference should be cited in the text, tables, or figures in consecutive numerical order, using superscript Arabic numerals.
• Use superscript numerals outside periods and commas, but inside colons and semicolons.
• Only surnames of authors are used in the text. For a 2 author list, use both surnames; for references with more than 2 authors or authors and a group, include the first author's name followed by "et al," "and coauthors," or "and colleagues"
• Avoid placing a superscript reference citation immediately after a number.
• Do not use possessive et al's in the text; rephrase the sentence.

For more information, see the AMA Manual of Style, Section 3.7.1 on Authors.