• [Wiki] http://en.wikipedia.org/wiki/Crotaphytus_collaris.
• [Fitc1956] Fitch, H. S. (1956). An ecological study of the collared lizard (Crotaphytus collaris). Univ. Kan. Publ. Mus. Nat. Hist., 8:213--274.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.