Dyfyniad APA

American National Standards Institute. (1990). Specification for Aluminum amd Aluminum Alloy Electrodes for Shielded Metal Arc Welding. American: American Welding Society.

Dyfyniad Arddull Chicago

American National Standards Institute. Specification for Aluminum Amd Aluminum Alloy Electrodes for Shielded Metal Arc Welding. American: American Welding Society, 1990.

Dyfyniad MLA

American National Standards Institute. Specification for Aluminum Amd Aluminum Alloy Electrodes for Shielded Metal Arc Welding. American: American Welding Society, 1990.

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