Leaché, A. D., Koo, M. S., Spencer, C. L., Papenfuss, T. J., Fisher, R. N., & McGuire, J. A. (2009). Quantifying ecological, morphological, and genetic variation to delimit species in the coast horned lizard species complex (Phrynosoma). National Academy of Sciences.

Leaché, Adam D., Michelle S. Koo, Carol L. Spencer, Theodore J. Papenfuss, Robert N. Fisher, und Jimmy A. McGuire. Quantifying Ecological, Morphological, and Genetic Variation to Delimit Species in the Coast Horned Lizard Species Complex (Phrynosoma). National Academy of Sciences, 2009.

Leaché, Adam D., et al. Quantifying Ecological, Morphological, and Genetic Variation to Delimit Species in the Coast Horned Lizard Species Complex (Phrynosoma). National Academy of Sciences, 2009.