MolluscaBase eds. (2025). MolluscaBase.
Colus pygmaeus (A. Gould, 1841). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=160214 on 2025-05-08