Cameron, R., & Riley, G. Keys for the identification of land snails in the British Isles (Second edition.).
Chicago Style (17th ed.) CitationCameron, Robert, and Gordon Riley. Keys for the Identification of Land Snails in the British Isles. Second edition.
MLA (9th ed.) CitationCameron, Robert, and Gordon Riley. Keys for the Identification of Land Snails in the British Isles. Second edition.
Warning: These citations may not always be 100% accurate.