• [Wiki] http://en.wikipedia.org/wiki/Heosemys_spinosa.
• [EoL] https://eol.org/pages/456687.
• [Goet2007] Goetz, M. (2007). Husbandry and breeding of the spiny turtle Heosemys spinosa (Gray, 1931) at the Durrell Wildlife Conservation Trust. RADIATA, 16(2).
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.