↑(2004) , database, Amphibian Species of the World: an Online Reference
↑ 5.05.1(2001) , website, Amphibian Species of the World: An online reference
↑Banks, R. C., R. W. McDiarmid, and A. L. Gardner (1987) Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, Resource Publication, no. 166
↑Flores-Villela, Oscar / McCoy, C. J., ed. (1993) Herpetofauna Mexicana: Lista anotada de las especies de anfibios y reptiles de México, cambios taxonómicos recientes, y nuevas especies, Carnegie Museum of Natural History Special Publication, no. 17
↑(2000) , database, Comisión Nacional para el Conocimiento y Uso de la Biodiversidad
↑ 9.09.1Mendelson, Joseph R., III (1998) Geographic Variation in Bufo valliceps (Anura: Bufonidae), a Widespread Toad in the United States and Middle America, Scientific Papers, Natural History Museum, The University of Kansas, no. 8
↑Conant, R., and J. T. Collins (1991) , A Field Guide to Reptiles and Amphibians, Eastern and Central North America, Third Edition
↑Collins, J. T. (1990) , Standard Common and Current Scientific Names for North American Amphibians and Reptiles, Third Edition
↑ 12.012.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)
↑ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 26 Abril 2011