Vogel, C. M. (2005). The design of things to comehow ordinary pople create extraordinary productsCraig M. Vogel, Jonathan cagan and Peter Boatwright. Wharton School Publishing.
Dyfyniad Arddull ChicagoVogel, Craig M. The Design of Things to Comehow Ordinary Pople Create Extraordinary ProductsCraig M. Vogel, Jonathan Cagan and Peter Boatwright. Wharton School Publishing, 2005.
Dyfyniad MLAVogel, Craig M. The Design of Things to Comehow Ordinary Pople Create Extraordinary ProductsCraig M. Vogel, Jonathan Cagan and Peter Boatwright. Wharton School Publishing, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.