American National Standards Institute. (1989). Standard for Accrediation of Test Facilities for AWS Certified Welder Program - AWS QC 4-89. American: American Welding Society.
Style de citation ChicagoAmerican National Standards Institute. Standard for Accrediation of Test Facilities for AWS Certified Welder Program - AWS QC 4-89. American: American Welding Society, 1989.
Style de citation MLAAmerican National Standards Institute. Standard for Accrediation of Test Facilities for AWS Certified Welder Program - AWS QC 4-89. American: American Welding Society, 1989.
Attention : ces citations peuvent ne pas être correctes à 100%.