APA (7th ed.) Citation

Paul, J. W. (1930). What mine foreman can do to prevent injury from falls of roof in coal mines. [publisher not identified].

Chicago Style (17th ed.) Citation

Paul, J. W. What Mine Foreman Can Do to Prevent Injury from Falls of Roof in Coal Mines. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Paul, J. W. What Mine Foreman Can Do to Prevent Injury from Falls of Roof in Coal Mines. [publisher not identified], 1930.