Occupational Safety and Health Administration. United States Department of Labor. (1991). Occupational safety and health standards for general industry (29 CFR PART 1910): With amendments as of december 6, 1991. Chicago, Illinois: Commerce Clearing House.
Citación estilo ChicagoOccupational Safety and Health Administration. United States Department of Labor. Occupational Safety and Health Standards for General Industry (29 CFR PART 1910): With Amendments As of December 6, 1991. Chicago, Illinois: Commerce Clearing House, 1991.
Cita MLAOccupational Safety and Health Administration. United States Department of Labor. Occupational Safety and Health Standards for General Industry (29 CFR PART 1910): With Amendments As of December 6, 1991. Chicago, Illinois: Commerce Clearing House, 1991.