APA (7th ed.) Citation

Conference on Cardiovascular Disease Aspen, Colo, American College of Cardiology, University of Colorado Medical Center, & Vogel, J. H. K. (1972). Long-term prognosis following valve replacement. S. Karger.

Chicago Style (17th ed.) Citation

Conference on Cardiovascular Disease Aspen, Colo, American College of Cardiology, University of Colorado Medical Center, and John H. K. Vogel. Long-term Prognosis Following Valve Replacement. Basel, New York: S. Karger, 1972.

MLA (9th ed.) Citation

Conference on Cardiovascular Disease Aspen, Colo, et al. Long-term Prognosis Following Valve Replacement. S. Karger, 1972.