Swainson, W. (1840). A treatise on malacology; or the natural classification of shells and shell-fish. Longman, London, viii + 419 pp., available online athttp://www.biodiversitylibrary.org/item/33450 page(s): 337 [details]
MolluscaBase eds. (2021). MolluscaBase. Helisoma Swainson, 1840. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=159869 on 2024-04-19
NARMS (2024). Helisoma Swainson, 1840. Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=159869 on 2024-04-19
original descriptionSwainson, W. (1840). A treatise on malacology; or the natural classification of shells and shell-fish. Longman, London, viii + 419 pp., available online athttp://www.biodiversitylibrary.org/item/33450 page(s): 337 [details]