Burke. Land Snails and Slugs of the Pacific Northwest. Oregon State University Press.
Citazione stile Chigago Style (17a edizione)Burke. Land Snails and Slugs of the Pacific Northwest. Oregon State University Press.
Citatione MLA (9a ed.)Burke. Land Snails and Slugs of the Pacific Northwest. Oregon State University Press.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.