Odes, Edward J., Patrick S. Randolph-Quinney, Maryna Steyn, Zach Throckmorton, Jacqueline S. Smilg, Bernhard Zipfel, Tanya N. Augustine, et al. 2016. “Earliest Hominin Cancer: 1.7-Million-Year-Old Osteosarcoma from Swartkrans Cave, South Africa”. South African Journal of Science 112 (7/8): 5. https://doi.org/10.17159/sajs.2016/20150471.