Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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