APA (7th ed.) Citation

Purves, P. E., & Pilleri, G. (1983). Echolocation in whales and dolphins. Academic Press.

Chicago Style (17th ed.) Citation

Purves, P. E., and Giorgio Pilleri. Echolocation in Whales and Dolphins. London [u.a.]: Academic Press, 1983.

MLA (9th ed.) Citation

Purves, P. E., and Giorgio Pilleri. Echolocation in Whales and Dolphins. Academic Press, 1983.