Project 928 - A development history of the Porsche 928 from first sketch to production.
Written by Julius Weitmann and Rico Steinemann, published by Motorbuch Verlag, 1978
Weitmann and Steinemann were granted exclusive access to document the inception of the Porsche 928, from as early as 1972 thru 1977. This is a must read for any 928 owner!
