MolluscaBase eds. (2021). MolluscaBase.
Retusa umbilicata var. nitidula. 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=416742 on 2024-04-28
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2024). European Register of Marine Species.
Retusa umbilicata var. nitidula. Accessed at: https://www.marbef.org/data/aphia.php?p=taxdetails&id=416742 on 2024-04-28