APA (7th ed.) Citation

Leakey, R. E., & Lewin, R. (1992). Origins reconsidered: In search of what makes us human. Abacus.

Chicago Style (17th ed.) Citation

Leakey, Richard E., and Roger Lewin. Origins Reconsidered: In Search of What Makes Us Human. Abacus, 1992.

MLA (9th ed.) Citation

Leakey, Richard E., and Roger Lewin. Origins Reconsidered: In Search of What Makes Us Human. Abacus, 1992.

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