British opisthobranch molluscs : mollusca, gastropoda : keys and notes for the identification of the species - Thompson, T. E; Brown, Gregory H.; Linnean Society of London (London : Published for the Linnean Society of London by Academic Press, 1976)
Bibliography: p. 197
Keywords: Opisthobranchiata -- United Kingdom -- Identification; Mollusks -- United Kingdom; Great Britain -- Opisthobranchiata -- Identification; Great Britain -- Mollusks