Dyfyniad APA
Ullman, D. G. (2010). The Mechanical Design Process (4th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Ullman, David G. The Mechanical Design Process. 4th ed. New Delhi: McGraw-Hill, 2010.
Dyfyniad MLA
Ullman, David G. The Mechanical Design Process. 4th ed. McGraw-Hill, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.