• [Wiki] https://en.wikipedia.org/wiki/Gopherus_agassizii.
• [ADW] http://animaldiversity.org/accounts/Gopherus_agassizii/.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Gopherus_agassizii.
• [ErnsBarb1989] Ernst, C. H. and Barbour, R. W. (1989). Turtles of the world. Smithsonian Institutiun Press, Washington.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [MediNuss2012] Medica, P. A., Nussear, K. E., Esque, T. C., and Saethre, M. B. (2012). Long-term growth of desert tortoises (Gopherus agassizii) in a southern Nevada population. Journal of Herpetology, 46(2):213--220.