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Passos, P., Fernandes, R. and 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 (Jun. 2005), 19–34. DOI:https://doi.org/10.11646/zootaxa.1013.1.2.