leakey,, L., & Goodall, V. M. (1969). Unveiling man's origins: The decades of thought about human evolution. Schenkman.
Chicago-viite (17. p.)leakey,, L.S.B, ja Vanne Morris Goodall. Unveiling Man's Origins: The Decades of Thought About Human Evolution. Cambridge, Mass: Schenkman, 1969.
MLA-viite (9. p.)leakey,, L.S.B, ja Vanne Morris Goodall. Unveiling Man's Origins: The Decades of Thought About Human Evolution. Schenkman, 1969.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.