Hopf, P. S. (1975). Designer's guide to OSHA: A design manual for architects, engineers, and builders to the Occupational safety and health act. McGraw-Hill.
Cita Chicago (17th ed.)Hopf, Peter S. Designer's Guide to OSHA: A Design Manual for Architects, Engineers, and Builders to the Occupational Safety and Health Act. New York: McGraw-Hill, 1975.
Cita MLA (8th ed.)Hopf, Peter S. Designer's Guide to OSHA: A Design Manual for Architects, Engineers, and Builders to the Occupational Safety and Health Act. McGraw-Hill, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.