APA (7th ed.) Citation

Gautier, D. L. (1981). Petrology of the Eagle Sandstone, Bearpaw Mountains area, north-central Montana. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Gautier, Donald L. Petrology of the Eagle Sandstone, Bearpaw Mountains Area, North-central Montana. [Reston, Va.]: United States Department of the Interior, Geological Survey, 1981.

MLA (9th ed.) Citation

Gautier, Donald L. Petrology of the Eagle Sandstone, Bearpaw Mountains Area, North-central Montana. United States Department of the Interior, Geological Survey, 1981.