File:Mercedes-Benz SL 350 AMG Line (R 231) – Frontansicht, 16. März 2014, Düsseldorf.jpg - Wikimedia Commons
MERCEDES-BENZ, The modern SL cars: R107, R129, R230, R231: S. Koehling, Bernd: 9781484108246: Amazon.com: Books
Amazon.co.jp: FERODO-FDB4261 SL350 SL550 Benz SL Class R231 Rear/Rear Brake Pad/Disc Pad Left and Right Set 064207220 0084203420 FERODO-FDB4261 SL350 SL50 : Automotive