Não informado. (1976). Occupational Health and Safety. Stevens Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. Occupational Health and Safety. Waco, Tex: Stevens Publishing, 1976.
MLA-Zitierstil (8. Ausg.)Não informado. Occupational Health and Safety. Stevens Publishing, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.