| Ref. | Description | Named Used | Page |
|---|---|---|---|
| 833 | Ruppert, E.E., R.S. Fox and R.D. Barnes 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. | Isometra hordea | |
| 3477 | MarineSpecies.org 2050 MarineSpecies.org. | Isometra hordea | |
| 87340 | Southern Ocean Mollusc Database (SOMBASE) 2011 British Antarctic Survey, SOMBASE. | Isometra hordea |