| Trích dẫn | 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. |
| Tài liệu tham khảo | 833 Ruppert, E.E., R.S. Fox and R.D. Barnes, 2004 |
| Trang | |
| Named Used as Valid | Retusa obtusa |
| Địa phương | |
| Distribution |