Mercedes Benz 230, 250 and 280, 1968-1972 / 6-Cylinder sohc / Sedan, Coupe, Roadster Automotive Repair Manual: John Haynes, P. G. Strasman: 9780856963469: Amazon.com: Books
1972 Mercedes Benz W108 280SE 4.5 V8 1 Owner MINT - YouTube
Mercedes-Benz, The 1960s, W108/109 V8 with buyer's guide and chassis number, data card explanation: From the 280SE 3.5 to the 300SEL 6.3, updated April 2018, with many recent color photos, Koehling, Bernd