Colorado
Osborn, R., G. Kittel, and M. Reid. 1999. Riparian plant associations of Colorado and vegetation classification of the western United States.
Neville, T. 2003. In-house DVD for World Wildlife Fund Projects: Peloncillo 2001 and Rio Grande 2003.
Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, C. Spurrier, and T. Skadelandl. 1996. Colorado rare plant field guide. Prepared for the Bureau of Land Management, the U.S. Forest Service, and the U.S. Fish and Wildlife Service by the
Dunn, W.C. and B.T. Milne. 2014. Implications of climatic heterogeneity for conservation of the Lesser Prairie-Chicken (Tympanuchus pallidicinctus). Ecosphere 5(5):1–17.
Rosmarino, Nicole. 2004. Lesser prairie-chicken: the sky really is falling. Forest Guardians.. 22 p.
Pierce, L.J.S. 2006. Boreal Toad (Bufo boreas boreas) Recovery Plan. Conservation Services Division. New Mexico Department of Game and Fish. 25 p.