MolluscaBase eds. (2021). MolluscaBase.
Defrancia formosa Jeffreys, 1883. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://marbef.org/data/aphia.php?p=taxdetails&id=437120 on 2024-09-03
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species.
Defrancia formosa Jeffreys, 1883. Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=437120 on 2024-09-03