American National Standards Institute. (1993). Standard for AWS Certified Welders. American: American Welding Society.
シカゴスタイル引用形American National Standards Institute. Standard for AWS Certified Welders. American: American Welding Society, 1993.
MLA引用形式American National Standards Institute. Standard for AWS Certified Welders. American: American Welding Society, 1993.
警告: この引用は必ずしも正確ではありません.