• [Wiki] http://en.wikipedia.org/wiki/Alytes_muletensis.
• [EoL] http://eol.org/pages/1039071/overview.
• [ADW] http://animaldiversity.org/accounts/Alytes_obstetricans/.
• [amphibiaweb] https://amphibiaweb.org/cgi/amphib_query?where-genus=Alytes&where-species=muletensis.
• [nlsoorten] http://www.nederlandsesoorten.nl/linnaeus_ng/app/views/species/nsr_taxon.php?id=139971&cat=151&epi=1.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [PinyPere2013] Pinya, S. and Perez-Mellado, V. (2013). Ageing and growth of the endangered midwife toad Alytes muletensis. Endang Species Res, 22:263--268.