Schuchert, P. (2018). World Hydrozoa Database. Willsia Forbes, 1846. Accessed through: Land J. van der (ed). (2008) UNESCO-IOC Register of Marine Organisms (URMO) at: http://www.marinespecies.org/urmo/aphia.php?p=taxdetails&id=720120 on 2018-04-22
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). Willsia Forbes, 1846. Accessed at: http://www.marinespecies.org/urmo/aphia.php?p=taxdetails&id=720120 on 2018-04-22