MolluscaBase eds. (2024). MolluscaBase. Umbilia hesitata hesitata (Iredale, 1916). Accessed through: World Register of Marine Species at: https://marinespecies.org/aphia.php?p=taxdetails&id=567275 on 2024-05-01
taxonomy sourceLorenz F. & Massiglia D. (2005) <i>Umbilia oriettae</i> nov. sp. - An overlooked species from Eastern Australia (Gastropoda: Cypraeidae). <i>Visaya</i> 1(5): 37-44. [November 2005][details]