Gray, J.E. (1851)
List of the specimens of fish in the collection of the British Museum. Part I. Chondropterygii.
British Museum (Natural History), London, 160 pp
MacDonald, J.D. & Barron, C. (1868)
Notes on Heptranchus indicus, chiefly as regards sexual characters.
Proceedings of the Zoological Society of London, 1868, 371–373