Mendelson, J. R. . I., C. T. Kinsey, and J. B. Murphy. “A Review of the Biology and Literature of the Gulf Coast Toad (Incilius nebulifer), Native to Mexico and the United States”. Zootaxa, vol. 3974, no. 4, June 2015, pp. 517–537, doi:10.11646/zootaxa.3974.4.4.