PDMA Handbook
From the Product Development Managers Association (PDMA), an excellent reource on the new product development process.
PDMA Toolbook 1
A collection of excellent articles from some of the leaders in new product development and commercialisation.
PDMA Toolbook 2
Second edition of this series from the PDMA containing excellent articles on new product development.
Generating Breakthrough New Product Ideas
Cooper and Edgett's classic book on the new product development process.
Winning at New Products
A classic book on the StageGate process that has become a benchmark system for new product development.
Product Innovation & Technology Strategy
This book outlines th steps to develop product-technology strategies.