Morton, M. C. (2017). Aerial geology: A high-altitude tour of North America's spectacular volcanoes, canyons, glaciers, lakes, craters, and peaks. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMorton, Mary Caperton. Aerial Geology: A High-altitude Tour of North America's Spectacular Volcanoes, Canyons, Glaciers, Lakes, Craters, and Peaks. Portland, Oregon: Timber Press, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMorton, Mary Caperton. Aerial Geology: A High-altitude Tour of North America's Spectacular Volcanoes, Canyons, Glaciers, Lakes, Craters, and Peaks. Timber Press, 2017.
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