Vogel, G., David, P. and Chandramouli, S.R. 2014.

On the systematics of Trimeresurus labialis Fitzinger in Steindachner, 1867, a pitviper from the Nicobar Islands (India), with revalidation of Trimeresurus mutabilis Stoliczka, 1870 (Squamata, Viperidae, Crotalinae)

. Zootaxa. 3786, 5 (Apr. 2014), 557–573. DOI:https://doi.org/10.11646/zootaxa.3786.5.4.