Murphy, J.C., Charles, S.P., Lehtinen, R.M. & Koeller, K.L. (2013)

A molecular and morphological characterization of Oliver’s parrot snake, Leptophis coeruleodorsus (Squamata: Serpentes: Colubridae) with the description of a new species from Tobago

. Zootaxa, 3718 (6), 561–574.