United States. Bureau of Labor Statistics. (1980). Wage chronology, bituminous coal mine operators and United Mine Workers, 1933-81. U.S. Dept. of Labor, Bureau of Labor Statistics.
Chicago Style (17th ed.) CitationUnited States. Bureau of Labor Statistics. Wage Chronology, Bituminous Coal Mine Operators and United Mine Workers, 1933-81. Washington, D.C.: U.S. Dept. of Labor, Bureau of Labor Statistics, 1980.
MLA (9th ed.) CitationUnited States. Bureau of Labor Statistics. Wage Chronology, Bituminous Coal Mine Operators and United Mine Workers, 1933-81. U.S. Dept. of Labor, Bureau of Labor Statistics, 1980.
Warning: These citations may not always be 100% accurate.