Dyfyniad APA

Earle, J. H. (1992). Engineering design graphics (7th ed.). Addison Wesley.

Dyfyniad Arddull Chicago

Earle, James H. Engineering Design Graphics. 7th ed. Massachusetts: Addison Wesley, 1992.

Dyfyniad MLA

Earle, James H. Engineering Design Graphics. 7th ed. Addison Wesley, 1992.

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