APA (7th ed.) Citation

Willis, D. (1992). The Leakey family: Leaders in the search for human origins. Facts on File.

Chicago Style (17th ed.) Citation

Willis, Delta. The Leakey Family: Leaders in the Search for Human Origins. New York: Facts on File, 1992.

MLA (9th ed.) Citation

Willis, Delta. The Leakey Family: Leaders in the Search for Human Origins. Facts on File, 1992.