APA (7th ed.) Citation

Fournier, R. O. (1994). A field-trip guide to Yellowstone National Park, Wyoming, Montana, and Idaho--volcanic, hydrothermal, and glacial activity in the region. United States Government Printing Office.

Chicago Style (17th ed.) Citation

Fournier, Robert O. A Field-trip Guide to Yellowstone National Park, Wyoming, Montana, and Idaho--volcanic, Hydrothermal, and Glacial Activity in the Region. Washington: United States Government Printing Office, 1994.

MLA (9th ed.) Citation

Fournier, Robert O. A Field-trip Guide to Yellowstone National Park, Wyoming, Montana, and Idaho--volcanic, Hydrothermal, and Glacial Activity in the Region. United States Government Printing Office, 1994.