The American Medical Association (AMA) citation style is used in the Medical Sciences. Here are some examples on how to cite various commonly used sources in AMA style.
Book with one author:
McKenzie BC. Medicine and the Internet: Introducing Online Resources and Terminology. 2nd ed. New York, NY: Oxford University Press; 1997.
Electronic Journal article:
Gage BF, Fihn SD, White RH. Management and dosing of warfarin therapy. The American Journal of Medicine. 2000;109(6):481-488. doi:10.1016/S0002-9343(00)00545-3.
Print Journal article:
Hu P, Reuben DB. Effects of managed care on the length of time that elderly patients spend with physicians during ambulatory visits. Med Care. 2002;40(7):606-613.
American Cancer Society. Cancer Facts & Figures 2003. http://www.cancer.org/downloads/STT/CAFF2003PWSecured.pdf. Accessed March 3, 2003.