Cita APA (7a ed.)

Shull, A. F., Larue, G. R., & Ruthven, A. G. (1941). Principles of animal biology (5th. ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Shull, A. Franklin, George R. Larue, y Alexander G. Ruthven. Principles of Animal Biology. 5th. ed. New York: McGraw-Hill, 1941.

Cita MLA (8a ed.)

Shull, A. Franklin, et al. Principles of Animal Biology. 5th. ed. McGraw-Hill, 1941.