Bennett, Matthew R., Harris, John W. K., Richmond, Brian G., Braun, David R., Mbua, Emma, Kiura, Purity, Olago, Daniel, Kibunjia, Mzalendo, Omuombo, Christine, Behrensmeyer, Anna K., Huddart, David, and Gonzalez, Silvia. 2009. "
Early Hominin Foot Morphology Based on 1.5-Million-Year-Old Footprints from Ileret, Kenya."
Science, 323, (5918) 1197–1201.
https://doi.org/10.1126/science.1168132.