↑ 2.02.12.2Frost, Darrel R. (2009) , database. Amphibian Species of the World: an Online Reference v5.3
↑ 3.03.13.2 (2004) , database, Amphibian Species of the World: an Online Reference
↑ 4.04.1Frost, Darrel R. (1997) , Amphibian Species of the World, A Taxonomic and Geographic Reference. Second edition
↑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)