Turk. A History of Occupational Health and Safety. University of Nevada Press.
Chicago-referens (17:e uppl.)Turk. A History of Occupational Health and Safety. University of Nevada Press.
MLA-referens (8:e uppl.)Turk. A History of Occupational Health and Safety. University of Nevada Press.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.