Kumar, P. (2012). Product design: Creativity, concepts and usability. PHI Learning Private.
Chicago-Zitierstil (17. Ausg.)Kumar, Prashant. Product Design: Creativity, Concepts and Usability. New Delhi: PHI Learning Private, 2012.
MLA-Zitierstil (9. Ausg.)Kumar, Prashant. Product Design: Creativity, Concepts and Usability. PHI Learning Private, 2012.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.