Mexico
Liverman, D. 1999. North American Landscape Characterization (NALC) Digital Elevation Model (DEM). University of Arizona, Latin American Area Center, Tucson, Arizona.
Spellenberg, R. 2007. E-mail to P. Tonne from Rich Spellenberg. 4 April 2007. 2 p.
Muldavin, E. and R. DeVelice. 1987. A forest habitat type classification of Southern Arizona and its relationship to forests of the Sierra Madre Occidental of Mexico. In: E. Aldon, C. Gonzales Vicente, and W. Moir tech. coord. Strategies for classificatio
McGrady, M, T. Maechtle, J. Vargas, W. Seegar, and M. Pena. 2002. Migration and ranging of Peregrine Falcons wintering on the Gulf of Mexico coast, Tamaulipas, Mexico. The Condor. 104:39-48.
Dinerstein, E, J. Olson, J. Atchely, C. Loucks, S. Contreras-Balderas, R. Abell, E. Inigo, E. Enkerlin, C.E. Williams, and G. Castilleja. Draft Ecoregion-based conservation in the Chihuahuan Desert: a biological assessment and biodiversity vision. A coll
Powell, A. M. 1983. Perityle (Asteraceae), New Species and Notes. Madrono, 30, No. 4: 217-225.
Wood, S, G. Harper, E. Muldavin, and P. Neville. 1999. Vegetation map of the Sierra del Carmen, U.S.A. and Mexico, Final report & Arcview project.
New Mexico Department of Game and Fish. 2009. Scanned field data sheets for the Chiricahua leopard frog from 2004-2006 for Chihuahua, Mexico.
Neville, T. 2003. Animas Foundation: DRG mosaics for U.S. & Mexico for areas contiguous to principal area of interest.
Neville, T. 2002. Mosaic of DRGs for Malpai Borderlands and parts of Mexico.