@book{28916,
	author = {DeLong, J. Bradford. and Olney, Martha L.},
	title = {Macroeconomics /},
	publisher = {McGraw-Hill,},
	year = {2006.},
	address = {Boston :},
	edition = {2nd ed. },
	note = {Various multi-media instructional materials are available to supplement the text.},
	url = {http://www.loc.gov/catdir/enhancements/fy0623/2005041667-b.html}
}