↑Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. («Captain», p. 47).
Vogel, Gernot; van Rooijen, Johan (2011). «Contributions to a Review of the „Dendrelaphis pictus“ (Gmelin, 1789) Complex (Serpentes: Colubridae) — 3. The Indian Forms, with the Description of a New Species from the Western Ghats». Journal of Herpetology45 (1): 100—110. (Dendrelaphis ashoki, new species).