American National Standards Institute. (1996). Standard for AWS certification of welding inspectors (In lần thứ 1.). America: American Welding Society.
Chicago Style aipamenaAmerican National Standards Institute. Standard for AWS Certification of Welding Inspectors. In lần thứ 1. America: American Welding Society, 1996.
MLA aipamenaAmerican National Standards Institute. Standard for AWS Certification of Welding Inspectors. In lần thứ 1. America: American Welding Society, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.