Title: VW Passat & Audi A4: Passat (1998 thru 2005) & Audi A4 (1996 thru 2001) 1.8L 4-cylinder turbo and 2.8L V6 engines, Author: J.J. Haynes
Title: Audi A6, S6 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005: Repair Manual on DVD-ROM: Including Avant, Allroad Quattro, Rs6, Author: Audi of America
Title: Audi A4, S4 2002, 2003, 2004, 2005, 2006, 2007, 2008: Repair Manual on DVD-ROM: Includes Avant, Cabriolet, Rs4, Author: Audi of America
Title: Audi 4000-5000, 1978-81, Author: Kerry A. Freeman
Title: Audi 100, 200 Official Factory Repair Manual: 1989-1991 Including Quattro and 20-Valve, Author: Audi of America