Clayton, J. (2017). Wonderlandscape: Yellowstone National Park and the evolution of an American cultural icon (First Pegasus Books edition.). Pegasus Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClayton, John. Wonderlandscape: Yellowstone National Park and the Evolution of an American Cultural Icon. First Pegasus Books edition. New York: Pegasus Books, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रClayton, John. Wonderlandscape: Yellowstone National Park and the Evolution of an American Cultural Icon. First Pegasus Books edition. Pegasus Books, 2017.
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