Vogel, G., David, P. & 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), 557–573.