APA (7th ed.) Citation

Adams, W. W. (1929). National safety competition to assist in reduction of mine and quarry accidents. [publisher not identified].

Chicago Style (17th ed.) Citation

Adams, W. W. National Safety Competition to Assist in Reduction of Mine and Quarry Accidents. Washington, D.C.: [publisher not identified], 1929.

MLA (9th ed.) Citation

Adams, W. W. National Safety Competition to Assist in Reduction of Mine and Quarry Accidents. [publisher not identified], 1929.