Gaya APA

LEAKEY, R, E, &, L, S. (1995). Pithecanthropus . : Leiden : Richard E. Leakey Foundation.

Gaya MLA

LEAKEY, Richard, E, &, L.Jan, Slikkerveer. "Pithecanthropus". : Leiden : Richard E. Leakey Foundation, 1995. Book.