World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Matthevia variabilis Walcott, 1885&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1507039 on 2026-08-25
Walcott, D. (1885). Note on some Paleozoic pteropods. American Journal of Science. ser. 3, 30: 17-21.