Molluscs: benthic opisthobranchs (Mollusca: Gastropoda): keys and notes for the identification of the species
Thompson, T.E. (1988). Molluscs: benthic opisthobranchs (Mollusca: Gastropoda): keys and notes for the identification of the species. 2nd edition. Synopses of the British Fauna, N.S. 8. E.J. Brill/W. Backhuys: Leiden. ISBN 90-04-08439-8. 356 pp.
Part of: Barnes, R.S.K.; Crothers, J.H. (Ed.) Synopses of the British Fauna. Linnean Society of London: London; New York. ISSN 0082-1101, more
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