APA (7th ed.) Citation

United States. Department of Commerce. (1921). Treatment of tungsten ores of Boulder County, Colo. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Commerce. Treatment of Tungsten Ores of Boulder County, Colo. [Washington]: GPO, 1921.

MLA (9th ed.) Citation

United States. Department of Commerce. Treatment of Tungsten Ores of Boulder County, Colo. GPO, 1921.

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