@book{43590,
	author = {Haag, Stephen. and Cummings, Maeve.},
	title = {Information systems essentials /},
	publisher = {McGraw-Hill,},
	year = {c2006.},
	address = {Boston :},
	url = {http://www.loc.gov/catdir/enhancements/fy0620/2004115410-t.html}
}