| Referência no | Descrição | Ano | Nome usado | Página |
|---|---|---|---|---|
| 1202 | Gappa, J.L. 2000 Species richness of marine Bryozoa in the continental shelf and slope off Argentina (south-west Atlantic). Diversity and Distribution. 6:15-27. | 2000 | Columnella gracilis | --> |
| 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 | Columnella gracilis | --> |