@book{248,
	author = {Williamson, Stephen D.},
	title = {Macroeconomics /},
	publisher = {Pearson/Addison Wesley,},
	year = {c2003.},
	address = {Boston :},
	edition = {Canadian ed.},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/toc/eccoccip0720/2007024566.html}
}