Dyfyniad APA

Niebel, B. W., & Draper, A. B. (1994). Product design and process engineering. Mc Graw - Hill.

Dyfyniad Arddull Chicago

Niebel, Benjamin W., and Alan B. Draper. Product Design and Process Engineering. New Delhi: Mc Graw - Hill, 1994.

Dyfyniad MLA

Niebel, Benjamin W., and Alan B. Draper. Product Design and Process Engineering. Mc Graw - Hill, 1994.

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