Não informado. (2001). Welding engineer: International edition. American Welding Society.
Chicago-referens (17:e uppl.)Não informado. Welding Engineer: International Edition. Chicago, Ill: American Welding Society, 2001.
MLA-referens (8:e uppl.)Não informado. Welding Engineer: International Edition. American Welding Society, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.