McDiarmid RW, Campbell JA, Touré T (1999). Snake Species of the World: A Taxonomic and Geographic Reference, Volume 1. Washington, District of Columbia: Herpetologists' League. 511 pp. ISBN1-893777-00-6 (series). ISBN1-893777-01-4 (volume).
Gumprecht A, Tillack F, Orlov NL, Captain A, Ryabov S (2004). Asian Pit vipers. Berlin: Geitje Books. First Edition. 368 pp. ISBN3-937975-00-4.