Bock, P. (2022). World List of Bryozoa.
Hippodiplosia propinqua (Smitt, 1868). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2022) European Register of Marine Species at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=159856 on 2022-07-02