@book{255104,
	author = {Lang, Kevin and Kalameja, Alan J.},
	title = {AutoCAD 2012 tutor for engineering graphics /},
	publisher = {Autodesk Press/Delmar Cengage Learning,},
	year = {c2012.},
	series = {Autodesk},
	address = {Clifton Park, NY :},
	note = {Includes index.}
}