1. Seton, E.T., 1928,Lives of Game Animals. Volume III, (New York, NY: Doubleday Page), 780 pp.
2. Gilbert, D.L. and Schmidt, J.L., 1981,Big Game of North America: Ecology and Management, (Mechanicsburg, PA: Stackpole Books), 494 pp.
3. Jorgensen, M.C., 2014,Desert Bighorn Sheep: Wilderness Icon, (San Diego, CA: Sunbelt Publications), 144 pp.
4. Western Association of Fish and Wildlife Agencies (WAFWA) Wild Sheep Working Group, 2014,Bighorn Sheep: Conservation Challenges and Management Strategies for the 21st Century, 28 pp.