APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (8:e uppl.)

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