@book{46103,
	author = {Williamson, John,},
	title = {Reference rates and the international monetary system /},
	publisher = {P. G. Peterson Institute for International Economics,},
	year = {2007.},
	address = {Washington, DC :},
	url = {http://www.loc.gov/catdir/toc/ecip075/2006038799.html}
}