Cita APA (7a ed.)

Kelsey, J. L. W. (1996). Methods in observational epidemiology (2nd.). Oxford University Press.

Cita Chicago Style (17a ed.)

Kelsey, Jennifer L. Whittemore. Methods in Observational Epidemiology. 2nd. New York: Oxford University Press, 1996.

Cita MLA (8a ed.)

Kelsey, Jennifer L. Whittemore. Methods in Observational Epidemiology. 2nd. Oxford University Press, 1996.