[1] Lewandowski, J. 2005. Ferrets Faring Well in Northwest Colorado. Colorado Division of Wildlife. Website <http://www.blackfootedferret.org/news/Ferrets-faring%20-well-9-21-05.htm> accessed 3/2006.
[2] U.S. Fish and Wildlife Service. Black-Footed Ferret. Website <http://mountain-prairie.fws.gov/species/mammals/blackfootedferret/>. Accessed March, 2006.