Bock, P. (2021). World List of Bryozoa. Posterula sarsii (Smitt, 1868). Accessed through: Nozères, C., Kennedy, M.K. (Eds.) (2021) Canadian Register of Marine Species at: http://marinespecies.org/carms/aphia.php?p=taxdetails&id=470620 on 2024-03-28
Nozères, C., Kennedy, M.K. (Eds.) (2024). Canadian Register of Marine Species. Posterula sarsii (Smitt, 1868). Accessed at: https://marinespecies.org/carms/aphia.php?p=taxdetails&id=470620 on 2024-03-28