APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Ridgwag, Sam H., and Richard J. Harrison. Handbook of Marine Mammals. London: Academic Press, 1981.

MLA (9th ed.) Citation

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