1. The western United States rangelands: A major resource;Havstad,2009
2. Part 630 – Policy and Procedures. Definition;United States Department of Agriculture Natural Resources Conservation Service,2014
3. Effects of black-tailed prairie dogs (Cynomys ludovicianus) and cattle on vegetation composition and disappearance in the mixed-grass prairie;Gabrielson,2009
4. Soil change induced by prairie dogs across three ecological sites;Barth;Soil Science Society of America Journal,2014
5. SAS 9,2010