APA
(1989). Journal of the American Society of Echocardiograpy. Arlington, Virginia: American society of Echocardiography.
Chicago
1989. Journal of the American Society of Echocardiograpy. Arlington, Virginia: American society of Echocardiography.
Harvard
(1989). Journal of the American Society of Echocardiograpy. Arlington, Virginia: American society of Echocardiography.
MLA
Journal of the American Society of Echocardiograpy. Arlington, Virginia: American society of Echocardiography. 1989.
