APA (7th ed.) Citation

Leakey, R. E., & Lewin, R. (1996). The sixth extinction: Biodiversity and its survival. Weidenfeld & Nicolson.

Chicago Style (17th ed.) Citation

Leakey, Richard E., and Roger Lewin. The Sixth Extinction: Biodiversity and Its Survival. London: Weidenfeld & Nicolson, 1996.

MLA (9th ed.) Citation

Leakey, Richard E., and Roger Lewin. The Sixth Extinction: Biodiversity and Its Survival. Weidenfeld & Nicolson, 1996.