APA-viite (7. p.)

Leakey, R. E., & Lewin, R. (1977). Origins: What new discoveries reveal about the emergence of our species and its possible future. Dutton.

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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