Clark, K. B. (1984). New records and synonymies of Bermuda opisthobranchs (Gastropoda). <em>The Nautilus.</em> 98(2): 85-97, figs. 1-52., available online athttp://biodiversitylibrary.org/page/8277110 page(s): 91 [details]
MolluscaBase eds. (2026). MolluscaBase. Costasiellidae K. B. Clark, 1984. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026) European Register of Marine Species at: https://marbef.org/data/aphia.php?p=taxdetails&id=23012 on 2026-10-12
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Costasiellidae K. B. Clark, 1984. Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=23012 on 2026-10-12
original descriptionClark, K. B. (1984). New records and synonymies of Bermuda opisthobranchs (Gastropoda). <em>The Nautilus.</em> 98(2): 85-97, figs. 1-52., available online athttp://biodiversitylibrary.org/page/8277110 page(s): 91 [details]