J. van As, A. J. Davies, and N. J. Smit, “Hepatozoon langii n. sp. and Hepatozoon vacuolatus n. sp. (Apicomplexa: Adele­orina: Hepatozoidae) from the crag lizard (Sauria: Cordylidae) Pseudocordylus langi from the North Eastern Drakensberg escarpment, Eastern Free State, South Africa”, Zootaxa, vol. 3608, no. 5, pp. 345–356, Jan. 2013.