World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Costacolpus spiralis (Natsky, 1916)&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1587890 on 2026-08-01
Natsky A.D. (1916). Гастроподы септариевых глин Мангышлака [= Gastropods of the Septaria-clays of Mangyshlak]. Trudy Geologicheskogo i Mineralogicheskogo Muzeya imeni imperatora Petra Velikogo Imperatorskoy Akademii nauk. 2(2): 23-48.