R. E. F. Leakey, J. M. Mungai, and A. C. Walker. New australopithecines from East Rudolf, Kenya (II). American Journal of Physical Anthropology, volume 36, issue 2, pages 235-252, 1972.

R. E. F. Leakey, J. M. Mungai, and A. C. Walker. New australopithecines from East Rudolf, Kenya. American Journal of Physical Anthropology, volume 35, issue 2, pages 175-186, 1971.