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 title = {Atlas and Red List of the Reptiles of South Africa, Lesotho and Swaziland},
 year = {2014}
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,@book{2817,
 address = {Cape Town},
 author = {Branch, W.R.},
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 title = {Field Guide to Snakes and other Reptiles of Southern Africa. Third Edition},
 year = {1998}
}
,@article{5336,
 author = {De Waal, S.W.P.},
 journal = {Memoirs of the National Museum of Bloemfontein},
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 title = {The Squamata (Reptilia) of the Orange Free State, South Africa},
 volume = {11},
 year = {1978}
}
,@techreport{5336,
 address = {Pretoria, South Africa},
 author = {Jacobsen, N.H.G.},
 institution = {Chief Directorate of Nature and Environmental Conservation},
 title = {The distribution and conservation status of reptiles and amphibians in the Transvaal. Final Report Project TN 6/4/1/30},
 year = {1989}
}
,@article{44979971,
 author = {Broadley, D.G.},
 journal = {African Journal of Herpetology},
 number = {2},
 pages = {83--119},
 title = {A review of the species of <i>Psammophis</i> Boie found south of Latitude 12&deg;S (Serpentes: Psammophiinae)},
 volume = {51},
 year = {2002}
}
,@article{44979997,
 author = {Kelly, C.M.R., Barker, N.P., Villet, M.H., Broadley, D.G. and Branch, W.R.},
 journal = {Molecular Phylogenetics and Evolution},
 pages = {1045--1060},
 title = {The snake family Psammophiidae (Reptilia: Serpentes): Phylogenetics and species delimitation in the African sand snakes (<i>Psammophis</i> Boie, 1825) and allied genera},
 volume = {47},
 year = {2008}
}
,@phdthesis{44980033,
 author = {Taft, J.M.},
 school = {University of the Western Cape, Cape Town},
 title = {Phylogenetic Assessment and Historical Biogeography of the <i>Psammophis leightoni</i> Complex},
 year = {2018}
}
,]