World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Halecium labrosum Alder, 1859. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=117591 on 2026-08-30
Alder J. (1859). Descriptions of three new species of Sertularian Zoophytes. Annals and Magazine of natural History (3). 3: 353-356, pls 12-14.