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. https://doi.org/10.11646/zootaxa.3786.5.4