Bock, P. (2021). World List of Bryozoa. Posterula sarsii (Smitt, 1868). Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021) European Register of Marine Species at: http://marbef.org/data../aphia.php?p=taxdetails&id=470620 on 2022-07-02
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2022). European Register of Marine Species. Posterula sarsii (Smitt, 1868). Accessed at: https://vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=470620 on 2022-07-02