American National Standards Institute. (1993). Recommended Practice for the Training, Qualification and Certification of Welding Inspector Specialist and Welding Inspector Assistant. American: American Welding Society.
Trích dẫn kiểu ChicagoAmerican National Standards Institute. Recommended Practice for the Training, Qualification and Certification of Welding Inspector Specialist and Welding Inspector Assistant. American: American Welding Society, 1993.
Deismireacht MLAAmerican National Standards Institute. Recommended Practice for the Training, Qualification and Certification of Welding Inspector Specialist and Welding Inspector Assistant. American: American Welding Society, 1993.
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