Cita APA (7a ed.)

Code, C. F., & Brobeck, J. R. (1967). Alimentary canal: 2, Secretion. American Physiological Society.

Cita Chicago Style (17a ed.)

Code, Charles F., y John R. Brobeck. Alimentary Canal: 2, Secretion. Washington: American Physiological Society, 1967.

Cita MLA (9a ed.)

Code, Charles F., y John R. Brobeck. Alimentary Canal: 2, Secretion. American Physiological Society, 1967.