Graham, A. (1971). British prosobranch and other operculate gastropod molluscs: Keys and notes for the identification of the species. Acad. Press.
Chicago-Zitierstil (17. Ausg.)Graham, Alastair. British Prosobranch and Other Operculate Gastropod Molluscs: Keys and Notes for the Identification of the Species. London [u.a.]: Acad. Press, 1971.
MLA-Zitierstil (9. Ausg.)Graham, Alastair. British Prosobranch and Other Operculate Gastropod Molluscs: Keys and Notes for the Identification of the Species. Acad. Press, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.