| Ref No. | Description | Page |
|---|---|---|
| 000833 | 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. | |
| 003477 | MarineSpecies.org,2050 MarineSpecies.org. http://www.marinespecies.org/index.php |