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.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रUnited 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.
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