| 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. | |
| 007374 | Xiuming, H.,1989 Studies on ascidians of China Seas. 1. The species of genus Ascidia. Studia marina sinica/Haiyang Kexue Jikan. Qingdao 30:239-250. |