1. Santymire, R. M. , Marinari, P. E. , Kreeger, J. S. , Wolf, K. N. , Wildt, D. E. , & Howard, J. G. (2005). Reproductive deficiency and asynchrony in yearling male black-footed ferrets. Paper presented at the Symposium on the Status of the Black-Footed Ferret and Its Habitat. Fort Collins, CO.
2. Sperm viability in the black-footed ferret (Mustela nigripes) is influenced by seminal and medium osmolality
3. The prairie dog of the Great Plains;Merriam;US Department of Agriculture Yearbook,1902