United States. National Park Service. Division of Publications. (1986). North Cascades: A guide to the North Cascades National Park Service complex, Washington. U.S. Dept. of the Interior.
Style de citation Chicago (17e éd.)United States. National Park Service. Division of Publications. North Cascades: A Guide to the North Cascades National Park Service Complex, Washington. Washington, D.C.: U.S. Dept. of the Interior, 1986.
Style de citation MLA (8e éd.)United States. National Park Service. Division of Publications. North Cascades: A Guide to the North Cascades National Park Service Complex, Washington. U.S. Dept. of the Interior, 1986.
Attention : ces citations peuvent ne pas être correctes à 100%.