@book{1160,
	author = {McConnell, Campbell R. and Brue, Stanley L.,},
	title = {Economics :},
	publisher = {McGraw-Hill,},
	year = {�1996.},
	address = {New York :},
	edition = {13th ed.},
	url = {http://www.gbv.de/dms/bowker/toc/9780070468146.pdf}
}