(1989). Yellowstone and Grand Teton National Parks and the Middle Rocky Mountains: Casper, Wyoming to Salt Lake City, Utah, July 20 - 30, 1989. American Geophysical Union.
Chicago Style (17th ed.) CitationYellowstone and Grand Teton National Parks and the Middle Rocky Mountains: Casper, Wyoming to Salt Lake City, Utah, July 20 - 30, 1989. Washington, DC: American Geophysical Union, 1989.
MLA (9th ed.) CitationYellowstone and Grand Teton National Parks and the Middle Rocky Mountains: Casper, Wyoming to Salt Lake City, Utah, July 20 - 30, 1989. American Geophysical Union, 1989.
Warning: These citations may not always be 100% accurate.