Romano, C., & Theisen, A. (2015). Day hiking Mount St. Helens: National Volcanic Monument : nature trails, winter routes, summit (First edition.). Mountaineers Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRomano, Craig, और Aaron Theisen. Day Hiking Mount St. Helens: National Volcanic Monument : Nature Trails, Winter Routes, Summit. First edition. Seattle: Mountaineers Books, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRomano, Craig, और Aaron Theisen. Day Hiking Mount St. Helens: National Volcanic Monument : Nature Trails, Winter Routes, Summit. First edition. Mountaineers Books, 2015.
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