Literature
- Boer, T.W. de & R.H. de Bruyne 1991. Schelpen van de Friese Waddeneilanden. Fryske Akademy-Ljouwert. Dr. W. Backhuys/U.B.S, Oegstgeest.
- Seaward, D.R. 1990. Distribution of the marine molluscs of north west Europe. Nature Conservancy Council.
- Step, E. 1927. Shell life. 421 pp. Frederick Warne & Co., LTD, London.
- Tebble, N. 1966. British Bivalve Seashells. 212 pp. Trustees of The British Museum (Natural history). London.