AutoCAD LT 2006
Ralph Grabowski
Illustrated AutoCAD Quick Reference Guide for Release 13/ Windows (Id-CAD/CAM)
Learning Autodesk Inventor 2008
Learn Microsoft VISIO 2002
The AutoCAD programming and customizing quick reference
The illustrated AutoCAD LT for Windows quick reference
The Web publisher's illustrated quick reference
Using Autocad 2002 (AutoCAD)
Using AutoCAD release 14