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.
Lua i Stíl Chicago (17ú heag.)Vogel, Craig M. The Design of Things to Comehow Ordinary Pople Create Extraordinary ProductsCraig M. Vogel, Jonathan Cagan and Peter Boatwright. Wharton School Publishing, 2005.
Lua MLA (8ú heag.)Vogel, Craig M. The Design of Things to Comehow Ordinary Pople Create Extraordinary ProductsCraig M. Vogel, Jonathan Cagan and Peter Boatwright. Wharton School Publishing, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.