(1981). Specification for qualification of welding procedures and welders for piping and tubing (Superseding AWS D10.9-69.). American Welding Society.
Chicago-Zitierstil (17. Ausg.)Specification for Qualification of Welding Procedures and Welders for Piping and Tubing. Superseding AWS D10.9-69. Miami <Fla.>: American Welding Society, 1981.
MLA-Zitierstil (9. Ausg.)Specification for Qualification of Welding Procedures and Welders for Piping and Tubing. Superseding AWS D10.9-69. American Welding Society, 1981.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.