@book{76417,
	author = {O'Brien, James A., and Marakas, George M.},
	title = {Introduction to information systems /},
	publisher = {McGraw-Hill/Irwin,},
	year = {2007.},
	address = {Boston :},
	edition = {13th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0625/2005052219-t.html}
}