English: This a map illustrates the geographic distribution of the North American tortoises of the genus Gopherus. It is based on texts and maps published in the following references
Edwards T, Karl AE, Vaughn M, Rosen PC, Torres CM, Murphy RW 2016. The desert tortoise trichotomy: Mexico hosts a third, new sister-species of tortoise in the Gopherus morafkai–G. agassizii group. ZooKeys 562: 131-158. doi: 10.3897/zookeys.562.6124
Iverson, J. B. 1992. A Revised Checklist with Distribution Maps of the Turtles of the World. Green Nature Books, Homestead, Florida. xiii, 363 pp.
Legler, J. M. and R. C. Vogt. The Tuertles of Mexico, Land and Freshwater Forms. University of California Press. Berkeley, California. xi, 402 pp.
Lemos Espinal, J. A. and J. R. Dixon. 2013. Amphibians and Reptiles of San Luis Potosí. Eagle Mountain Publishing, LC. Eagle Mountain, Utah. i-xii, 1-300 pp.
Lemos Espinal, J. A., G. R. Smith, J. R. Dixon, and A. Cruz. 2015. Amphibians and Reptiles of Sonora, Chihuahua, and Coahuila, Mexico. CONABIO, Mexico D. F. 668 pp.
Murphy, Robert W.;Kristin H. Berry, Taylor Edwards, Alan E. Leviton, Amy Lathrop, J. Daren Riedle 2011. The dazed and confused identity of Agassiz’s land tortoise, Gopherus agassizii (Testudines, Testudinidae) with the description of a new species, and its consequences for conservation. ZooKeys 113: 39–71; doi: 10.3897/zookeys.113.1353
Powell, R, R. Conant, and J. T. Collins. 2016. Peterson Field Guide to Reptiles and Amphibians of Eastern and Central North America, 4rd ed. Houghton Mifflin Co., Boston, Massachusetts. xiii, 494 pp.
Rose, L. F. and F. W. Judd. 2014. The Texas Tortoise, A Natural History (Vol 13 Animal Natural History Series). University of Oklahoma Press. Norman, OK. xviii, 188 pp.
Rostal, D. C., E. D. McCoy, and H. R. Mushinsky. 2014. Biology and Conservation of North American Tortoises. Johns Hopkins University Press. Baltimore, Maryland. i-x, 1-190 pp.
Stebbins, R. C. and S. M. McGinnis 2018. Peterson Field Guide to Western Reptiles and Amphibians. 4rd ed.. Houghton Mifflin Harcourt Company, Boston, New York. xi, 560 pp.