@book{5268,
	author = {Tregarthen, Timothy D. and Rittenberg, Libby.},
	title = {Economics /},
	publisher = {Worth Publishers,},
	year = {2000.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1011/99049098-d.html}
}