• [Wiki] http://en.wikipedia.org/wiki/Chersobius_signatus.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [Loeh2004] Loehr, V. J. (2004). Growth of the Namaqualand speckled padloper, Homopus signatus signatus (Reptilia: Testudinidae). African Zoology, 39(2):309--313.