| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 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 | Pseudocnella sykion | --> |
| 80553 | Branch, G.M., C.L. Griffiths, M.L. Branch and L. Beckley 2005 Two oceans: a guide to marine life in southern Africa. Struik Publishers, Cape Town, 360 p. | 2005 | Pseudocnella sykion | 204 |
| 356 | SAUP Database 2006 SAUP Database. www.seaaroundus.org. | 2006 | Pseudocnella sykion | --> |