APA (7th ed.) Citation

Carwardine, M. (1999). Whales, dolphins and porpoises (Second edition.). Checkmark Books.

Chicago Style (17th ed.) Citation

Carwardine, Mark. Whales, Dolphins and Porpoises. Second edition. New York: Checkmark Books, 1999.

MLA (9th ed.) Citation

Carwardine, Mark. Whales, Dolphins and Porpoises. Second edition. Checkmark Books, 1999.

Warning: These citations may not always be 100% accurate.