APA (7th ed.) Citation

Paul, J. W. (1929). Falls of roof in bituminous coal mines: Influence of seasons and rate of production. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Paul, J. W. Falls of Roof in Bituminous Coal Mines: Influence of Seasons and Rate of Production. [Washington?]: U.S. Government Printing Office, 1929.

MLA (9th ed.) Citation

Paul, J. W. Falls of Roof in Bituminous Coal Mines: Influence of Seasons and Rate of Production. U.S. Government Printing Office, 1929.