Based on AMA Manual of Style, 11th ed., 2020.
When citing electronic material, in addition to the basic information included as with print references, you must also, in general, include the URL (link) to the item as well as the date you accessed it. Two tips to keep in mind: provide the most direct url possible and if a DOI is listed instead of a URL, it is not necessary to include the date accessed. DOI is preferred over URL.
Please note: Some browsers may show italicized text as underlined. When preparing bibliographies based on any of the formats addressed by this series, italics are specified, and should be used. If you don't see an example for your type of reference, consult the manual itself.
Type of Entry
|Online journals with volume and page information||Kapur VK. Obstructive sleep apnea: diagnosis, epidemiology, and economics. Respir Care. 2010;55(9):1155-1167. http://www.rcjournal.com/contents/09.10/09.10.1155.pdf Accessed August 25, 2021.|
|Online journals without volume and page information *||Mast TC, DeMuro-Mercon C, Kelly CM, Floyd LE, Walter EB. The impact of rotavirus gastroenteritis on the family. BMC Pediatr. 2009;9(1):11. doi:10.1186/1471-2431-9-11 .|
|Web site||King MW. Carbohydrate Nomenclature. The Medical Biochemistry Page. Updated April 2, 2020. Accessed June 3, 2020. http://themedicalbiochemistrypage.org.|
|Cnline book||Neinstein, L, ed. Adolescent Health Care. 5th ed. Philadelphia: Lippincott W&W; 2008. http://www.r2library.com/marc_frame.aspx?ResourceID=931. Accessed November 9, 2011.|
|Chapter from an online book||Frey T, Young RK. Correct and preferred usage. In: Christiansen S, Iverson C, Flanagin A, et al. AMA Manual of Style: A Guide for Authors and Editors. 11th ed. Oxford University Press; 2020. Accessed August 20, 2020. https://www.amamanualofstyle.com/view/10.1093/ jama/9780190246556.001.0001/med-9780190246556-chapter-11|
|Online Reference||Amoxicillin. Micromedex. Truven Health Analytics; 2020. Updated June 2, 2020. Accessed July 22, 2020.http://www.micromedexsolutions.com/micromedex2/librarian#|
*When a DOI is provided it is preferable to supply it and no accessed date is needed.