APA (7th ed.) Citation

Leakey, R., & Lewin, R. (1995). The sixth extinction: Patterns of life and the future of humankind. Anchor Books.

Chicago Style (17th ed.) Citation

Leakey, Richard, and Roger Lewin. The Sixth Extinction: Patterns of Life and the Future of Humankind. New York: Anchor Books, 1995.

MLA (8th ed.) Citation

Leakey, Richard, and Roger Lewin. The Sixth Extinction: Patterns of Life and the Future of Humankind. Anchor Books, 1995.