Robert S. Hoffman. Assistant Secretary for the Sciences, Smithsonian Institution, National Museum of Natural History, Washington, DC 20560
website: U. S. Fish and Wildlife Service Endangered Species Program-05/01; http://www.fws.gov/endangered/
website: 2000 IUCN Red List of Threatened Species; http://www.redlist.org/
website: Mammal Species of the World; http://nmnhgoph.si.edu/msw/
Wilson, Don E., and DeeAnn M. Reeder, eds. 2005-10-01. Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., vols. 1 & 2. Johns Hopkins University Press. Baltimore, Maryland, USA. 2142. 0-8018-8221-4. .
Wilson, Don E., and DeeAnn M. Reeder, eds. 1992-01-01. Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing. Smithsonian Institution Press. Washington, DC, USA. xviii + 1207. 1-56098-217-9. Corrections were made to text at 3rd printing.
Wilson, Don E., and F. Russell Cole 2000-01-01. Common Names of Mammals of the World. Smithsonian Institution Press. Washington, DC, USA. xiv + 204. 1-56098-383-3. With contributions by Bernadette N. Graham, Adam P. Potter, and Mariana M. Upmeyer.
Wilson & Reeder, eds. (2005): Status: U.S. ESA - Endangered; IUCN - Endangered
Robert S. Hoffman: Status: Total population estimated at around 4,000 (Sugimura, 1990)
