Plumb, G. A. (2013). Waterfall lover's guide Pacific Northwest: Where to find hundreds of spectacular waterfalls in Washington, Oregon, and Idaho (Fifth edition.). Mountaineers Books.
Style de citation Chicago (17e éd.)Plumb, Gregory Alan. Waterfall Lover's Guide Pacific Northwest: Where to Find Hundreds of Spectacular Waterfalls in Washington, Oregon, and Idaho. Fifth edition. Seattle: Mountaineers Books, 2013.
Style de citation MLA (8e éd.)Plumb, Gregory Alan. Waterfall Lover's Guide Pacific Northwest: Where to Find Hundreds of Spectacular Waterfalls in Washington, Oregon, and Idaho. Fifth edition. Mountaineers Books, 2013.
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