United States. Mine Safety and Health Administration. (2010). Procedures for revoking MSHA certifications to take respirable dust samples or to maintain and calibrate approved dust sampling devices. [U.S. Dept. of Labor, Mine Safety and Health Administration].
Chicago Style (17th ed.) CitationUnited States. Mine Safety and Health Administration. Procedures for Revoking MSHA Certifications to Take Respirable Dust Samples or to Maintain and Calibrate Approved Dust Sampling Devices. [Arlington, Va.]: [U.S. Dept. of Labor, Mine Safety and Health Administration], 2010.
MLA (9th ed.) CitationUnited States. Mine Safety and Health Administration. Procedures for Revoking MSHA Certifications to Take Respirable Dust Samples or to Maintain and Calibrate Approved Dust Sampling Devices. [U.S. Dept. of Labor, Mine Safety and Health Administration], 2010.