APA (7th ed.) Citation

Geyer, J. N., & Paul, J. W. (1928). State laws relating to coal-mine timbering. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Geyer, John Nicholas, and J. W. Paul. State Laws Relating to Coal-mine Timbering. [Washington?]: U.S. Government Printing Office, 1928.

MLA (9th ed.) Citation

Geyer, John Nicholas, and J. W. Paul. State Laws Relating to Coal-mine Timbering. U.S. Government Printing Office, 1928.