APA (7th ed.) Citation

(1977). Origins: What new discoveries reveal about the emergence of our species and its possible future / Richard E. Leakey and Roger Lewin.

Chicago Style (17th ed.) Citation

Origins: What New Discoveries Reveal About the Emergence of Our Species and Its Possible Future / Richard E. Leakey and Roger Lewin. 1977.

MLA (9th ed.) Citation

Origins: What New Discoveries Reveal About the Emergence of Our Species and Its Possible Future / Richard E. Leakey and Roger Lewin. 1977.