Passos, P., Fernandes, R., & Porto, M. (2005). Geographical variation and taxonomy of the snail-eating snake Dipsas albifrons (Sauvage, 1884), with comments on the systematic status of Dipsas albifrons cavalheiroi Hoge, 1950 (Serpentes: Colubridae: Dipsadinae). Zootaxa, 1013(1), 19–34. https://doi.org/10.11646/zootaxa.1013.1.2