Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health). (2006). A method to characterize risk associated with mine roof conditions. U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health.
Chicago Style (17th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). A Method to Characterize Risk Associated with Mine Roof Conditions. [Pittsburgh, Pa.]: U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2006.
MLA (9th ed.) CitationPittsburgh Research Laboratory (National Institute for Occupational Safety and Health). A Method to Characterize Risk Associated with Mine Roof Conditions. U.S. Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, 2006.