Bock, P. (2021). World List of Bryozoa. Cyclotrypa communis (Ulrich, 1890) †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1410683 on 2024-09-14
Marine Species Traits editorial board (2024). Marine Species Traits. Cyclotrypa communis (Ulrich, 1890) †. Accessed at: https://marinespecies.org/traits./aphia.php?p=taxdetails&id=1410683 on 2024-09-14