↑ 3.03.1Frost, Darrel R. (2009) , database. Amphibian Species of the World: an Online Reference v5.3
↑ 4.04.1 (2001) , website, Amphibian Species of the World: An online reference
↑ 5.05.1 (2001) , website, 2000 IUCN Red List of Threatened Species
↑ 6.06.1 (2001) , website, U. S. Fish and Wildlife Service Endangered Species Program
↑ (2004) , database, 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
↑Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2004) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, draft (2004)
↑ 10.010.1Bisby 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