APA (7th ed.) Citation

United States. Department of Commerce. (1924). Coal-mining problems in State of Washington. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Commerce. Coal-mining Problems in State of Washington. [Washington]: GPO, 1924.

MLA (9th ed.) Citation

United States. Department of Commerce. Coal-mining Problems in State of Washington. GPO, 1924.

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