Leslea J. Hlusko; Whitney B. Reiner; Jackson K. Njau (8 June 2015). "A one-million-year-old hominid distal ulna from Olduvai Gorge, Tanzania". American Journal of Physical Anthropology. 158 (1): 36–42. doi:10.1002/ajpa.22765. PMID26058378.
Leslea J. Hlusko; Whitney B. Reiner; Jackson K. Njau (8 June 2015). "A one-million-year-old hominid distal ulna from Olduvai Gorge, Tanzania". American Journal of Physical Anthropology. 158 (1): 36–42. doi:10.1002/ajpa.22765. PMID26058378.