(1919). Wages and hours of labor in the coal mining industry in 1919. Government Printing Office.
Chicago Style (17th ed.) CitationWages and Hours of Labor in the Coal Mining Industry in 1919. Government Printing Office, 1919.
MLA (8th ed.) CitationWages and Hours of Labor in the Coal Mining Industry in 1919. Government Printing Office, 1919.
Warning: These citations may not always be 100% accurate.