World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Cylichna bulloidea Dell, 1956. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=531521 on 2026-08-01
Dell, R. K. (1956). The archibenthal Mollusca of New Zealand. Dominion Museum Bulletin. 18: 1-235.