Burke, T. E. (2013). Land snails and slugs of the Pacific Northwest. Oregon State University Press.
Citace podle Chicago (17th ed.)Burke, Thomas E. Land Snails and Slugs of the Pacific Northwest. Corvallis: Oregon State University Press, 2013.
Citace podle MLA (9th ed.)Burke, Thomas E. Land Snails and Slugs of the Pacific Northwest. Oregon State University Press, 2013.
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