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♦ ¹Evaluating Diet Composition of Pronghorn in Wind Cave National Park, South Dakota, CHRISTOPHER N. JACQUES, JARET D. SIEVERS, JONATHAN A. JENKS, CHAD L. SEXTON, and DANIEL E. RODDY, The Prairie Naturalist 38(4): December 2006, pp. 239-250
♦ ²Negron, Jose F. 1995. Cone and Seed Insects Associated with Piñon Pine. In: Shaw, Douglas W.; Aldon, Earl F.; LoSapio, Carol, technical coordinators. Desired future conditions for piñon- juniper ecosystems: Proceedings of the symposium; 1994 August 8-12; Flagstaff, AZ. Gen. Tech. Rep. RM-258. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station: 97-106.