Gw mau tau Lihat juga dari Bipedalisme

Isaac, G.I., "The Archeological Evidence for the Activities of Early African Hominids" In:Early Hominids of Africa (Jolly, C.J. (Ed.)), Duckworth (London), 219-254, (1978).

Jablonski, N.G. & Chaplin, G. "Origin of Habitual Terrestrial Bipedalism in the Ancestor of the Hominidae", Journal of Human Evolution, 24, 259-280, (1993).

Lovejoy, C. O., "The Origin of Man." Science, 211, 341-350, (1981).

Tanner, N.M., "On Becoming Human", Cambridge University Press (Cambridge), (1981).

Wescott, R.W., "Hominid Uprightness and Primate Display", American Anthropologist, 69, 738,(1967).

Wheeler, P. E., "The Evolution of Bipedality and Loss of Functional Body Hair in Hominoids." Journal of Human Evolution, 13, 91-98, (1984).

Vrba, E., "The Pulse that Produced Us." Natural History'', 102(5), 47-51, (1993).