Não informado. (2004). Industrial safety equipment and clothing. United Trade Press.
Chicago-referens (17:e uppl.)Não informado. Industrial Safety Equipment and Clothing. London: United Trade Press, 2004.
MLA-referens (8:e uppl.)Não informado. Industrial Safety Equipment and Clothing. United Trade Press, 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.