Citazione APA

American National Standards Institute. (1993). Standard for AWS Certified Welders. American: American Welding Society.

Stile di citazione Chicago

American National Standards Institute. Standard for AWS Certified Welders. American: American Welding Society, 1993.

Citazione MLA

American National Standards Institute. Standard for AWS Certified Welders. American: American Welding Society, 1993.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.