1. Agnew, W., D. W. Uresk, and R. M. Hansen. 1986. Flora and fauna associated with prairie dog colonies and adjacent ungrazed mixed-grass prairie in western South Dakota.Journal of Range Management 39:135–139.
2. Anderson, E., S. C. Forrest, T. W. Clark, and L. Richardson. 1986. Paliobiology, biogeography, and systematics of the black-footed ferret,Mustela nigripes (Audubon and Bachman), 1851.Great Basin Naturalist Memoirs 8:11–62.
3. Bell, W. R. 1918. Cooperative campaigns for the control of ground squirrels, prairie dogs, and jack rabbits.USDA Yearbook 1917:225–233.
4. Bell, W. R. 1921. Death to the rodents.USDA Yearbook 1920:421–438.
5. Bishop, N. G., and J. L. Culbertson. 1976. Decline of prairie dog towns in southwestern North Dakota.Journal of Range Management 29:217–220.