| 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 | Circulus modesta | --> |
| 86518 | Poppe, G.T. 2008 Philippine marine mollusks. Vol. 1 (Gastropoda - Part 1). ConchBooks. 759 p. | 2008 | Circulus modesta | 105, 508, pl 199 |
| 87883 | Tröndlé, J. and M. Boutet 2009 Inventory of marine molluscs of French Polynesia. Atoll Research Bulletin 570:1-90. | 2009 | Circulus modesta | --> |