World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Halitrephes maasi Bigelow, 1909. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=117622 on 2026-08-28
Bigelow, H. B. (1909a). The Medusae. Reports on the scientific results of the expedition to the eastern tropical pacific, in charge of Alexander Agassiz, by the U. S. Fish Commission steamer "Albatross" from October, 1904, to March, 1905. XVI. Memoirs of the Museum of comparative Zoology at Harvard College. 37: 1-243, plates 1-48.
Kramp, P.L., 1948. Medusae collected by the Swedish Antarctic Expedition 1901-03. Further Zool. Res. Swedish Antarctic Exped., 1901-1903 4 1: 1-16.
Vanhöffen, E., 1912. Die craspedote Medusen der Deutschen Südpolar Expedition 1901-1903. Dtsch. Südpol.Exped. 135 : 351-395.