United States. Mine Safety and Health Administration. (2011). Re-issue of P07-20: Change to respirable dust data card-addition of pre-weight date. [U.S. Dept. of Labor, Mine Safety and Health Administration].
Chicago Style (17th ed.) CitationUnited States. Mine Safety and Health Administration. Re-issue of P07-20: Change to Respirable Dust Data Card-addition of Pre-weight Date. [Arlington, Va.]: [U.S. Dept. of Labor, Mine Safety and Health Administration], 2011.
MLA (9th ed.) CitationUnited States. Mine Safety and Health Administration. Re-issue of P07-20: Change to Respirable Dust Data Card-addition of Pre-weight Date. [U.S. Dept. of Labor, Mine Safety and Health Administration], 2011.
Warning: These citations may not always be 100% accurate.