The Persona Life Cycle: Keeping People in Mind Throughout Product Design

John Pruitt, Tamara Adlin. Morgan Kaufmann, 2006.

Product Innovation: Leading Change through Integrated Product Development

David L. Rainey. Cambridge University Press. 2005.

Product Design and Development

Karl T. Ulrich, Steven D. Eppinger. Third Edition. McGraw-Hill/Irwin. 2004.

Paper prototyping: The fast and easy way to design and refine user interfaces

Carolyn Snyder. Morgan Kaufmann Publishers. 2003.