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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.