Cita APA (7a ed.)

Norman, A. W., & Litwack, G. (1987). Hormones. Academic Press.

Cita Chicago Style (17a ed.)

Norman, Anthony W., y Gerald Litwack. Hormones. San Diego [etc.]: Academic Press, 1987.

Cita MLA (9a ed.)

Norman, Anthony W., y Gerald Litwack. Hormones. Academic Press, 1987.