Porsche 911 (964): Carrera 2, Carrera 4 and turbocharged models. Model years 1989 to 1994 (Essential Buyer's Guide series), Streather, Adrian, eBook - Amazon.com
Porsche 911: Carrera 3.2 (1983-1989) (The Ultimate Owner's Guide): Wingrove, Gordon: 9781906712020: Books: Amazon.com
Porsche 911 Enthusiast's Companion: Carrera 2, Carrera 4, and Turbo 1989-1994 by Streather, Adrian published by Bentley (Robert) Inc.,US (2004): Amazon.com: Books
Praxisratgeber Klassikerkauf Porsche 911: Alle Modelle bis 1989 (German Edition), Morgan, Peter, eBook - Amazon.com
Porsche 911: 1974-1989: Storz, Alexander F.: 9783613039957: Amazon.com: Books
Amazon.com: LEGO Technic Porsche 911 RSR 42096 Race Car Building Set STEM Toy for Boys and Girls Ages 10+ Features Porsche Model Car with Toy Engine (1,580 Pieces) : Toys & Games