AMA Style Guide: Citing Online Resources

Template

Author(s). Chapter title. In: Editor(s). Book Title. [Edition number, if it is the second edition or above] ed. Publisher's name; copyright year:inclusive pages. Accessed [date]. URL or DOI URL

NOTE: There is no period after the URL.

Example

​Haine CL. The ophthalmic case historian. In: Benjamin WJ, Borish IM, eds. Borish's Clinical Refraction. 2nd ed. Elsevier; 2006:195-216. Accessed April 23, 2019. https://www-sciencedirect-com.eproxy.ketchum.edu/science/article/pii/B9780750675246500119

Template

Author(s). Title. Journal Name [using NLM abbreviations]. Year;vol(issue No.):inclusive pages. URL or doi:

NOTE: 

• There is no period after the doi or URL.
• The DOI is preferable to a URL
• Use permalinks or stable links (avoid a search result link if possible)

Example

Sánchez-Armendáriz K, García-Gil A, Romero CA, et al. Oral vitamin D3 5000 IU/day as an adjuvant in the treatment of atopic dermatitis: a randomized control trial. Int J Dermatol. 2018;57(12):1516-1520. doi:1111/ijd.14220

Template

Author(s). Title. Institution. Publication Date. Accessed Date. URL or doi

Example

Diagnosis and Treatment of Low Back Pain Work Group. VA/DoD clinical practice guideline for diagnosis and treatment of low back pain, Version 3.0. Department of Veterans Affairs, Department of Defense. February 2022. Accessed January 14, 2024. https://www.spine.org/Portals/0/assets/downloads/ResearchClinicalCare/Guidelines/LowBackPain.pdf

Template

Author(s), if given (skip if not given). Title of the specific item/page cited. Name of the Web site. [Published date]. Updated [date]. Accessed [date]. URL

NOTE:

• Omit Published and/or Updated date if not available.
• There is no period after the URL.

Examples

Charlton G. Internal linking for SEO: examples and best practices. SearchEngineWatch. Accessed February 10, 2016. https://searchenginewatch.com/sew/how-to/2428041/internal-linking-for-seo-examples-and-best-practices

Zika travel information. Centers for Disease Control and Prevention. January 26, 2016. Updated August 11, 2016. Accessed June 18, 2019. https://wwwnc-cdc-gov.eproxy.ketchum.edu/travel/page/zika-travel-information

Template

Author(s) if applicable. Name of monograph or document. Database name. Company (or vendor) maintaining the database. Accessed Date. URL

NOTE: 

• AMA does not provide information on how to cite a drug monograph from a database, but MLA (Medical Library Association) does provide an informative webpage with guidelines for Pharmacy students citing Drug Database (and other items).
• There is no period after the URL.

Examples

Facts and Comparisons

Tiotropium Bromide Oral Inhalation. Facts & Comparisons. Wolters Kluwer Clinical Drug Information, Inc. Accessed April 23, 2020. https://fco.factsandcomparisons.com

Micromedex

Adult Dosing. IBM Micromedex. Truven Health Analytics. Accessed April 23, 2020. https://www.micromedexsolutions.com/

Package inserts, patient information, and prescribing information can be cited as follows:

Template

Medication Name. the phrase Prescribing information, Patient information, or Package insert. Manufacturer’s Name; Year. Accessed Date. URL

NOTE: There is no period after the URL.

Examples

Zithromax. Prescribing information. Pfizer; 2017. Accessed June 23, 2020. https://www.pfizermedicalinformation.com/en-us/zithromax

Azilect. Package insert. Teva Pharmaceuticals Inc; 2014. Accessed June 23, 2020. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=e802c83c-e581-4a11-b83d-1df47120078d

Some suggestions for citing various popular social media are as follows:

NOTE: Social media content is fluid and temporary, and in scientific reporting, a better resource is likely available. 

Examples

Facebook

Mayo Clinic Sports Medicine Facebook page. #RotatorCuff tears are among the most common shoulder injuries, particularly in individuals who engage in activities that require repetitive arm motions. Discover the possible treatment options for a torn rotator cuff: https://mayocl.in/2H6AR3P. Accessed March 4, 2019. https://www.facebook.com/mayoclinicsportsmedicine

Blog

Gray T. Advice after mischief is like medicine after death. AMA Style Insider blog. February 11, 2019. Accessed March 10, 2019. https://amastyleinsider.com/2019/02/11/advice-after-mischief-is-like-medicine-after-death/

YouTube

Khan Academy health and medicine YouTube page. Accessed February 10, 2016. https://www.youtube.com/user/khanacademymedicine

Twitter

@AMAManual. Double negatives can be used to express a positive, but this yields a weaker affirmative than the simpler positive and may be confusing. “Our results are not inconsistent with the prior hypothesis.” “That won’t do you no good.” And the classic: “I can’t get no satisfaction.” March 7, 2019. Accessed March 10, 2019. https://twitter.com/AMAManual/status/1103678998327017483