APA (7th ed.) Citation

National Geographic Society (U.S.). Book Division & Darling, J. D. (1995). Whales, dolphins, and porpoises. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.). Book Division and James David Darling. Whales, Dolphins, and Porpoises. Washington, D.C.: The Society, 1995.

MLA (9th ed.) Citation

National Geographic Society (U.S.). Book Division and James David Darling. Whales, Dolphins, and Porpoises. The Society, 1995.