1. Anfia (1998): Automobile in cifre (Car Industry Statistics), Anfia, Turin.
2. Biemans, W. G. (1995): Internal and external networks in product development: a case for integration, in: Bruce, M., Biemans, W. G. (eds.), Product development: meeting the challenge of the design-marketing interface, Wiley, Chichester.
3. Burt, D. N., Soukup, W. R. (1985): Purchasing’s role in new product development, Harvard Business Review, vol. 63, no. 5, pp. 90–97.
4. Calabrese, G. (1997): Fare auto: la comunicazione e la cooperazione nello sviluppo prodotto (Creating a Car: Communication and cooperation in the product development process), Franco Angeli, Milan.
5. Clark, K. B., Fujimoto T. (1991): Product development performance, Harvard Business School Press, Boston.