Παραπομπή APA

Prashant Kumar. (2012). Product design: Creativity concepts and usability. PHI.

Παραπομπή Chicago Style

Prashant Kumar. Product Design: Creativity Concepts and Usability. New Delhi: PHI, 2012.

Παραπομπή MLA

Prashant Kumar. Product Design: Creativity Concepts and Usability. PHI, 2012.