APA (7th ed.) Citation

United States. Federal Board for Vocational Education. (1931). Coal-mine timbering: Technical information for use in vocational classes. GPO.

Chicago Style (17th ed.) Citation

United States. Federal Board for Vocational Education. Coal-mine Timbering: Technical Information for Use in Vocational Classes. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. Federal Board for Vocational Education. Coal-mine Timbering: Technical Information for Use in Vocational Classes. GPO, 1931.

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