@book{9917,
	author = {Coronel, Carlos. and Morris, Steven},
	title = {Database systems :},
	publisher = {Course Technology/Cengage Learning,},
	year = {c2013.},
	address = {Boston, MA :},
	url = {http://www.loc.gov/catdir/enhancements/fy1301/2011938493-d.html}
}