American National Standards Institute. (1996). Standard for AWS certification of welding inspectors (In lần thứ 1.). America: American Welding Society.
Trích dẫn kiểu ChicagoAmerican National Standards Institute. Standard for AWS Certification of Welding Inspectors. In lần thứ 1. America: American Welding Society, 1996.
Deismireacht MLAAmerican National Standards Institute. Standard for AWS Certification of Welding Inspectors. In lần thứ 1. America: American Welding Society, 1996.
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