MolluscaBase (2018). Donax variegatus var. calverti Pallary, 1912. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2018) European Register of Marine Species at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=753328 on 2019-02-19
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2019). European Register of Marine Species. Donax variegatus var. calverti Pallary, 1912. Accessed at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=753328 on 2019-02-19