↑ 2.02.1Fitzsimons,V.F.M. (1938) Transvaal Museum Expedition to South-West Africa and Little Namaqualand, May to August 1937 - Reptiles and Amphibians., Ann. Transvaal Mus. (Pretoria) 19 (2): 153-209
↑ 3.03.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)