Cross, N. (2011). Engineering design methods: Strategies for product design (4th ed.). John Wiley & Sons.
Dyfyniad Arddull ChicagoCross, Nigel. Engineering Design Methods: Strategies for Product Design. 4th ed. New Jersey: John Wiley & Sons, 2011.
Dyfyniad MLACross, Nigel. Engineering Design Methods: Strategies for Product Design. 4th ed. John Wiley & Sons, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.