Love, J. D. (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-Zitierstil (17. Ausg.)Love, J. D. Yellowstone and Grand Teton National Parks and the Middle Rocky Mountains: Casper, Wyoming to Salt Lake City, Utah, July 20-30, 1989. Washington, D.C: American Geophysical Union, 1989.
MLA-Zitierstil (9. Ausg.)Love, J. D. 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, 1989.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.