Herron MD, Waterman JM, Parkinson CL (2005). “Phylogeny and historical biogeography of African ground squirrels: the role of climate change in the evolution of Xerus”. 《Molecular Ecology》 14 (9): 2773–2788. doi:10.1111/j.1365-294X.2005.02630.x. PMID16029477.
Thomas, O (1929). “On mammals from the Kaoko-Veld, south-west Africa, obtained during Captain Shortridge's fifth Percy Sladen and Kaffrarian Museum expedition”. 《Proceedings of the Zoological Society of London》 106: 99–111. doi:10.1111/j.1469-7998.1929.tb07691.x.
Herron MD, Waterman JM, Parkinson CL (2005). “Phylogeny and historical biogeography of African ground squirrels: the role of climate change in the evolution of Xerus”. 《Molecular Ecology》 14 (9): 2773–2788. doi:10.1111/j.1365-294X.2005.02630.x. PMID16029477.