APA (7th ed.) Citation

Dorit, R. L., Walker, W. F., & Barnes, R. D. (1991). Zoology. Saunders College Pub..

Chicago Style (17th ed.) Citation

Dorit, Robert L., Warren Franklin Walker, and Robert D. Barnes. Zoology. Philadelphia: Saunders College Pub., 1991.

MLA (8th ed.) Citation

Dorit, Robert L., et al. Zoology. Saunders College Pub., 1991.