AutoCAD & AutoCAD LT All-in-One Desk Reference For Dummies (For Dummies (Computer/Tech)) by David Byrnes and Lee Ambrosius | Aug 7, 2006. 4.1 out of 5 stars 52. Paperback $29.99 $ 29. 99 $44.99 $44.99. FREE Shipping by Amazon. More Buying Choices $22.91 (39 used & new offers)