911 x 911: The Official Anniversary Book Celebrating 50 Years of the Porsche 911 (English, Spanish, French, German, Russian and Chinese Edition): Dieter Landenberger, The Porsche Museum: 9781935007234: Amazon.com: Books
The IROC Porsches: The International Race of Champions, Porsche's 911 RSR, and the Men Who Raced Them: Stone, Matt, Follmer, George: 9780760368251: Amazon.com: Books