APA (7th ed.) Citation

Adams, W. W. (1930). The sand and gravel safety contest of 1929. United States Bureau of Mines.

Chicago Style (17th ed.) Citation

Adams, W. W. The Sand and Gravel Safety Contest of 1929. [Washington, D.C.]: United States Bureau of Mines, 1930.

MLA (8th ed.) Citation

Adams, W. W. The Sand and Gravel Safety Contest of 1929. United States Bureau of Mines, 1930.