| Reference no. | Description | year | Name used | Page |
|---|---|---|---|---|
| 821 | Springsteen, F.J. and F.M. Leobrera 1986 Shells of the Philippines. Carfel Seashell Museum. Metro Manila, Philippines. 377 p. | 1986 | Scutus unquis | --> |
| 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 | Scutus unquis | --> |