Schuchert, P. (2024). World Hydrozoa Database. Opercularella rugosa (Nutting, 1901). Accessed through: Land J. van der (ed). (2008) UNESCO-IOC Register of Marine Organisms (URMO) at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=850468 on 2024-04-23
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). Opercularella rugosa (Nutting, 1901). Accessed at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=850468 on 2024-04-23