APA (7th ed.) Citation

Mills, E. A. (1917). The story of Estes Park, Grand Lake and Rocky Mountain national park (4th ed., rev. and enl.). The author.

Chicago Style (17th ed.) Citation

Mills, Enos A. The Story of Estes Park, Grand Lake and Rocky Mountain National Park. 4th ed., rev. and enl. Longs Peak, Estes Park, Col: The author, 1917.

MLA (9th ed.) Citation

Mills, Enos A. The Story of Estes Park, Grand Lake and Rocky Mountain National Park. 4th ed., rev. and enl. The author, 1917.