APA (7th ed.) Citation

Ash, S. H. (1930). Safety committees in coal mines of State of Washington. [publisher not identified].

Chicago Style (17th ed.) Citation

Ash, S. H. Safety Committees in Coal Mines of State of Washington. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Ash, S. H. Safety Committees in Coal Mines of State of Washington. [publisher not identified], 1930.

Warning: These citations may not always be 100% accurate.