Romano, C., & Theisen, A. (2015). Day hiking Mount St. Helens: National Volcanic Monument : nature trails, winter routes, summit (First edition.). Mountaineers Books.
Cita Chicago Style (17a ed.)Romano, Craig, y Aaron Theisen. Day Hiking Mount St. Helens: National Volcanic Monument : Nature Trails, Winter Routes, Summit. First edition. Seattle: Mountaineers Books, 2015.
Cita MLA (8a ed.)Romano, Craig, y Aaron Theisen. Day Hiking Mount St. Helens: National Volcanic Monument : Nature Trails, Winter Routes, Summit. First edition. Mountaineers Books, 2015.
Precaución: Estas citas no son 100% exactas.