Dyfyniad APA

American National Standards Institute. (1985). Guide for the Nonstructive Inspection of Welds. American: American Welding Society.

Dyfyniad Arddull Chicago

American National Standards Institute. Guide for the Nonstructive Inspection of Welds. American: American Welding Society, 1985.

Dyfyniad MLA

American National Standards Institute. Guide for the Nonstructive Inspection of Welds. American: American Welding Society, 1985.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.