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. Auckland, New Zealand, 1013(1), pp. 19–34. doi: 10.11646/zootaxa.1013.1.2.