• [Wiki] http://en.wikipedia.org/wiki/Psammobates_oculifer.
• [Kesw2012] Keswick, T. (2012). Ecology and morphology of the Kalahari tent tortoise, Psammobates oculifer, in a semi-arid environment. PhD thesis, University of the Western Cape.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.