MolluscaBase eds. (2025). MolluscaBase. Bulla quadrata S. V. Wood, 1839. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2025) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=720738 on 2026-06-29
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2026). European Register of Marine Species. Bulla quadrata S. V. Wood, 1839. Accessed at: https://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=720738 on 2026-06-29
original descriptionWood, S. V. (1839). On the Fossil Shells of the Crag. <em>The Magazine of Natural History.</em> 3: 460–465, pl. 7., available online athttps://www.biodiversitylibrary.org/page/2270433 page(s): 461, pl. 7, fig. 1 [details]