@book{489,
	author = {Norton, Peter,},
	title = {Peter Norton's introduction to computers.},
	publisher = {McGraw-Hill Technology Education,},
	year = {c2006.},
	address = {Boston :},
	edition = {6th ed.},
	url = {http://www.loc.gov/catdir/bios/mh051/2004055992.html}
}