APA (7th ed.) Citation

Mackay, R. (2002). The Penguin atlas of endangered species. Penguin Group.

Chicago Style (17th ed.) Citation

Mackay, Richard. The Penguin Atlas of Endangered Species. New York, N.Y.: Penguin Group, 2002.

MLA (9th ed.) Citation

Mackay, Richard. The Penguin Atlas of Endangered Species. Penguin Group, 2002.