Stanley, E. L.; Ceríaco, L. M. P.; Bandeira, S.; Valerio, H.; Bates, M. F.; Branch, W. R. A Review of Cordylus machadoi (Squamata: Cordylidae) in Southwestern Angola, With the Description of a New Species from the Pro-Namib Desert. Zootaxa 2016, 4061, 201–226.