| Ref. | Description | Named Used | Page |
|---|---|---|---|
| 76869 | Schwarzhans, W. and P.R. Møller 2007 Review of the Dinematichthyini (Teleostei: Bythitidae) of the Indo-west Pacific. Part III. Beaglichthys, Brosmolus, Monothrix and eight new genera with description of 20 new species. | Ungusurculus williamsi | 97; fig.39, 50-51; tab.2, 23 |
| 90102 | Allen, G.R. and M.V. Erdmann 2012 Reef fishes of the East Indies. | Ungusurculus williamsi | 139 |