Andreone, F., Mattioli, F., Jesu, R. and Randrianirina, J. E. 2001. Two new chameleons of the genus Calumma from north-east Madagascar, with observations on hemipenial morphology in the Calumma Furcifer group (Reptilia, Squamata, Chamaeleonidae). Herpetological Journal 11: 53-68 (for Calumma vatosoa Calumma vencesi)
Andreone, F., Mattioli, F., Jesu, R. Randrianirina, J. E (2001): Two new chameleons of the genus Calumma from north-east Madagascar, with observations on hemipenial morphology in the Calumma Furcifer group (Reptilia, Squamata, Chamaeleonidae) — Herpetological Journal, 11: 53-68. [pour Calumma vatosoa et Calumma vencesi]