APA (7th ed.) Citation

Geological Survey (U.S.) & ProQuest (Firm). (1906). Department of the Interior. United States Geological Survey. Charles D. Walcott, Director. The Yampa coal field, Routt County, Colorado. [publisher not identified].

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Department of the Interior. United States Geological Survey. Charles D. Walcott, Director. The Yampa Coal Field, Routt County, Colorado. Washington: [publisher not identified], 1906.

MLA (9th ed.) Citation

Geological Survey (U.S.) and ProQuest (Firm). Department of the Interior. United States Geological Survey. Charles D. Walcott, Director. The Yampa Coal Field, Routt County, Colorado. [publisher not identified], 1906.

Warning: These citations may not always be 100% accurate.