The following is a citation for a journal article in AMA style. You can see more information on citation styles on the citing sources page.
1. Friedman BJ, Waters J, Kwan OL, DeMaria AN. Comparison of magnetic resonance imaging and echocardiography in determination of cardiac dimensions in normal subjects. Journal of the American College of Cardiology. 1985; 5:1369-1376. Available from: Science Direct. Accessed January 15, 2013.