World Register of Marine Species (WoRMS)
Schuchert, P.; Choong, H.; Galea, H.; Hoeksema, B.; Lindsay, D.; Manko, M.; Pica, D. (2026). World Hydrozoa Database. Polyphyes ungulata Haeckel, 1888. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=710656 on 2026-08-03
Haeckel, E. (1888). Report on the Siphonophorae. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology. 28 (part 77): i-viii, 1-380, pl. 1-50.