World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Pyrula gracilis G. B. Sowerby I, 1825. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=414659 on 2026-08-29
Sowerby I, G. B. (1825). A catalogue of the shells contained in the collection of the late Earl of Tankerville: arranged according to the Lamarckian conchological system: together with an appendix, containing descriptions of many new species- London, vii + 92 + xxxiv pp.