• [Wiki] http://en.wikipedia.org/wiki/Anaxyrus_americanus.
• [amphibiaweb] https://amphibiaweb.org/cgi/amphib_query?scientific_name=Anaxyrus+americanus.
• [AnAge] http://genomics.senescence.info/species/entry.php?species=Anaxyrus_americanus.
• [Beac2001] Beachy, C. K. (2001). Effects of growth history and exogenous thyroxine on size and age at metamorphosis in the toad Bufo americanus. Copeia, 2001:829--834.
• [Hami1934] Hamilton, W. J. (1934). The rate of growth of the toad (Bufo americanus americanus Holbrook) under natural conditions. Copeia, 1934:88--90.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.