| شماره مرجع | توضیحات | سال | نام مورد استفاده | صفحه |
|---|---|---|---|---|
| 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 | Gadila simpsoni | --> |
| 1821 | Steiner, G. and A.R. Kabat 2004 Catalog of species-group names of recent and fossil Scaphopoda (Mollusca). Zoosystema 26(4):549-726. | 2004 | Cadulus simpsoni | 644 |
| 3441 | Caetano, C.H.S., V. Scarabino and R.S. Absalao 2006 Scaphopod (Mollusca) from the Brazilian continental shelf and upper slope (13° to 21°S) with description of two new species of the genus Cadulus Philippi, 1844. Zootaxa 1267:1-47. | 2006 | Gadila simpsoni | 40-41 |
| 83435 | Rosenberg, G. 2009 Malacolog 4.1.1: A Database of Western Atlantic Marine Mollusca. [WWW database (version 4.1.1)] URL http://www.malacolog.org/. | 2009 | Gadila simpsoni | --> |