@book{29722,
	author = {Appleyard, Dennis R. and Field, Alfred J.},
	title = {International economics /},
	publisher = {McGraw-Hill },
	year = {2001.},
	address = {Boston, Mass. },
	edition = {4a ed.},
	url = {http://catdir.loc.gov/catdir/description/mh021/00061617.html}
}