Finch, D. M. (1992). Threatened, endangered, and vulnerable species of terrestrial vertebrates in the rocky mountain region. United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station.
Chicago Style (17. basım) AtıfFinch, Deboran M. Threatened, Endangered, and Vulnerable Species of Terrestrial Vertebrates in the Rocky Mountain Region. Fort Collins, Colorado: United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1992.
MLA (9th ed.) AtıfFinch, Deboran M. Threatened, Endangered, and Vulnerable Species of Terrestrial Vertebrates in the Rocky Mountain Region. United States Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1992.