↑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