Dyfyniad APA

(2012). Welding symbols. Builder's Book, Inc..

Dyfyniad Arddull Chicago

Welding Symbols. Canoga Park, CA: Builder's Book, Inc., 2012.

Dyfyniad MLA

Welding Symbols. Builder's Book, Inc., 2012.

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