↑Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
↑Wilson, Don E., and DeeAnn M. Reeder, eds. (1992) , Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing
↑Wilson, Don E., and F. Russell Cole (2000) , Common Names of Mammals of the World
↑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
↑ (2001) , website, U. S. Fish and Wildlife Service Endangered Species Program-05/01
↑ (2003) , website, 2002 IUCN Red List of Threatened Species, 7 Nobyembre 2003
