Schuchert, P. (2024). World Hydrozoa Database.
Billardia subrufa (Jäderholm, 1904). Accessed through: Glover, A.G.; Higgs, N.; Horton, T. (2024) World Register of Deep-Sea species (WoRDSS) at: https://marinespecies.org/DeepSea/aphia.php?p=taxdetails&id=174415 on 2024-04-26
Glover, A.G.; Higgs, N.; Horton, T. (2024). World Register of Deep-Sea species (WoRDSS).
Billardia subrufa (Jäderholm, 1904). Accessed at: https://www.marinespecies.org/deepsea/aphia.php?p=taxdetails&id=174415 on 2024-04-26