APA (7th ed.) Citation

Gaskin, D. E. (1982). The ecology of whales and dolphins. Heinemann.

Chicago Style (17th ed.) Citation

Gaskin, David E. The Ecology of Whales and Dolphins. London [u.a.]: Heinemann, 1982.

MLA (9th ed.) Citation

Gaskin, David E. The Ecology of Whales and Dolphins. Heinemann, 1982.