World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Epitonium commodum (E. A. Smith, 1890). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=523818 on 2026-08-01
Smith, E. A. (1890). Report on the marine molluscan fauna of the island of St. Helena. Proceedings of the Zoological Society of London. 1890(2): 247-317, pls. 21-24.