Quah, E.S., Grismer, L.L., Jetten, T., Wood, P.L.J., Miralles, A., Sah, S.A.M., Guek, K.H. and Brady, M.L. 2018. The rediscovery of Schaefer’s Spine-jawed Snake (Xenophidion schaeferi Günther & Manthey, 1995) (Serpentes, Xenophidiidae) from Peninsular Malaysia with notes on its variation and the first record of the genus from Sumatra, Indonesia . Zootaxa. 4441, 2 (Jun. 2018), 366–378. DOI:https://doi.org/10.11646/zootaxa.4441.2.10.