| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 92973 | Ralph, P.M. 1958 New Zealand thecate hydroids. Part II. Families Lafoeidae, Lineolariidae, Haleciidae and Syntheciidae. Transactions of the Royal Society of New Zealand 85:301-356. | 1958 | Halecium ralphae | --> |
| 92916 | Hirohito, Emperor of Japan. 1995 The hydroids of Sagami Bay. II. Publications of the Biological Laboratory, Imperial Household, Tokyo, 1995:1-355 (English text); 1-244 (Japanse text). Edited and annotated by M. Yamada. | 1995 | Halecium ralphae | --> |
| 92952 | Watson, J.E. and W. Vervoort. 2001 The hydroid fauna of Tasmanian seamounts. Zoologische Verhandlingen, Leiden 333:1-37. | 2001 | Halecium ralphae | --> |
| 92909 | Watson, J.W. 2003 Deep-water hydroids (Hydrozoa: Leptolida) from Macquarie Island. Memoirs of Museum Victoria 60(2):151-180. | 2003 | Halecium ralphae | 164 |
| 833 | Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. Brooks/Cole, Thomson Learning learning, Inc. 990 p. | 2004 | Halecium ralpha | --> |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. http://www.marinespecies.org/index.php | 2050 | Halecium ralpha | --> |