Bassett, Lawrence G., et al. “Abnormal Coloration of a Western Ribbonsnake, Thamnophis Proximus (Say 1823), from Sutton County, Texas, USA”. Reptiles & Amphibians, vol. 29, no. 1, Jan. 2022, pp. 35-36, https://doi.org/10.17161/randa.v29i1.16039.