@book{187420,
	author = {Omura, George W. and ebrary, Inc.},
	title = {Mastering AutoCAD 2013 and AutoCAD LT 2013},
	publisher = {John Wiley & Sons,},
	year = {2012.},
	series = {Autodesk official training guide},
	address = {Indianapolis :},
	edition = {1st ed.},
	note = {Includes index.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10580308}
}