Fretter V. & Graham A. (1980). The Prosobranch Molluscs of Britain and Denmark. Part 5 - Marine Littorinacea. Journal of Molluscan Studies. Suppl. 7: 243-284.
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Fretter V. & Graham A.
1980
The Prosobranch Molluscs of Britain and Denmark. Part 5 - Marine Littorinacea