Romano, C. (2024). Day hiking Columbia River Gorge: Waterfalls, vistas, state parks, national scenic area (2nd edition.). Mountaineers Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRomano, Craig. Day Hiking Columbia River Gorge: Waterfalls, Vistas, State Parks, National Scenic Area. 2nd edition. Seattle, WA: Mountaineers Books, 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRomano, Craig. Day Hiking Columbia River Gorge: Waterfalls, Vistas, State Parks, National Scenic Area. 2nd edition. Mountaineers Books, 2024.
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