APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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