Dyfyniad APA

French, T. E., & Vierck,J Charles. (1978). Engineering drawing and graphic technology (12th.). McGraw-Hill.

Dyfyniad Arddull Chicago

French, Thomas Ewing, and Vierck,J Charles. Engineering Drawing and Graphic Technology. 12th. New York: McGraw-Hill, 1978.

Dyfyniad MLA

French, Thomas Ewing, and Vierck,J Charles. Engineering Drawing and Graphic Technology. 12th. McGraw-Hill, 1978.

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