APA (7th ed.) Citation

United States. Department of Commerce. (1913). Mine signboards. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Commerce. Mine Signboards. [Washington]: GPO, 1913.

MLA (9th ed.) Citation

United States. Department of Commerce. Mine Signboards. GPO, 1913.

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