Gordis, L., & Libauer, C. H. (1988). Epidemiology and health risk assessment. Oxford University Press.
Cita Chicago (17th ed.)Gordis, Leon, i Charlotte H. Libauer. Epidemiology and Health Risk Assessment. New York: Oxford University Press, 1988.
Cita MLA (9th ed.)Gordis, Leon, i Charlotte H. Libauer. Epidemiology and Health Risk Assessment. Oxford University Press, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.