World Register of Marine Species (WoRMS)
MolluscaBase eds. (2026). MolluscaBase. Gyriscus hayashii Shikama, 1970. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=689411 on 2026-08-02
Shikama, T. (1970). On some noteworthy marine gastropoda from southwestern Japan (II). Science Reports of the Yokohama National University. section 2 (Geol.), 16:19-27, 1 pl.