United States. Mine Safety and Health Administration. Mine injury and worktime, quarterly. U.S. Dept. of Labor, Mine Safety and Health Administration.
Chicago Style (17th ed.) CitationUnited States. Mine Safety and Health Administration. Mine Injury and Worktime, Quarterly. Denver, CO: U.S. Dept. of Labor, Mine Safety and Health Administration.
MLA (9th ed.) CitationUnited States. Mine Safety and Health Administration. Mine Injury and Worktime, Quarterly. U.S. Dept. of Labor, Mine Safety and Health Administration.
Warning: These citations may not always be 100% accurate.