Dyfyniad APA

Ulrich, K. (2008). Product design and development fourth edition. McGraw-Hill.

Dyfyniad Arddull Chicago

Ulrich, Karl. Product Design and Development Fourth Edition. McGraw-Hill, 2008.

Dyfyniad MLA

Ulrich, Karl. Product Design and Development Fourth Edition. McGraw-Hill, 2008.

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