Hawke, D. F., & Lewis, M. (1980). Those tremendous mountains: The story of the Lewis and Clark expedition. Norton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHawke, David Freeman, और Meriwether Lewis. Those Tremendous Mountains: The Story of the Lewis and Clark Expedition. New York: Norton, 1980.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHawke, David Freeman, और Meriwether Lewis. Those Tremendous Mountains: The Story of the Lewis and Clark Expedition. Norton, 1980.
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