Grismer, L. L., and N. Ahmad. “A New Insular Species of Cyrtodactylus (Squamata: Gekkonidae) from the Langkawi Archipelago, Kedah, Peninsular Malaysia”. Zootaxa, vol. 1924, no. 1, Nov. 2008, pp. 53–68, doi:10.11646/zootaxa.1924.1.3.