Christensen, J. M. (1978). Seashells: Bivalves of the British and northern European seas. Penguin Books.
Chicago Edition CitationChristensen, J Muller. Seashells: Bivalves of the British and Northern European Seas. New York: Penguin Books, 1978.
MLA Edition CitationChristensen, J Muller. Seashells: Bivalves of the British and Northern European Seas. Penguin Books, 1978.
Warning: These citations may not always be 100% accurate.