Não informado. (1973). Job safety and health. Occupational Safety and Health Administration.
Chicago-Zitierstil (17. Ausg.)Não informado. Job Safety and Health. Washington: Occupational Safety and Health Administration, 1973.
MLA-Zitierstil (8. Ausg.)Não informado. Job Safety and Health. Occupational Safety and Health Administration, 1973.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.