McFadden, C.S.; Cordeiro, R.; Williams, G.; van Ofwegen, L. (2024). World List of Octocorallia.
Umbellula monocephalus Pasternak, 1964. 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=128532 on 2024-04-19
Glover, A.G.; Higgs, N.; Horton, T. (2024). World Register of Deep-Sea species (WoRDSS).
Umbellula monocephalus Pasternak, 1964. Accessed at: https://marinespecies.org/deepsea/aphia.php?p=taxdetails&id=128532 on 2024-04-19