APA (7th ed.) Citation

Shull, A. F., Ruthven, A. G., & Larue, G. R. (1924). Principles of animal biology (2nd ed.). McGraw-Hill Book Co..

Chicago Style (17th ed.) Citation

Shull, A. Franklin, Alexander Grant Ruthven, and George R. Larue. Principles of Animal Biology. 2nd ed. New York: McGraw-Hill Book Co., 1924.

MLA (9th ed.) Citation

Shull, A. Franklin, et al. Principles of Animal Biology. 2nd ed. McGraw-Hill Book Co., 1924.