APA (7th ed.) Citation

Ridgway, S. H., & Harrison, R. (1981). Handbook of marine mammals. Academic Press.

Chicago Style (17th ed.) Citation

Ridgway, Sam H., and Richard Harrison. Handbook of Marine Mammals. London ; New York: Academic Press, 1981.

MLA (9th ed.) Citation

Ridgway, Sam H., and Richard Harrison. Handbook of Marine Mammals. Academic Press, 1981.