@book{127179,
	author = {Krugman, Paul R. and Obstfeld, Maurice.},
	title = {International economics :},
	publisher = {Addison-Wesley,},
	year = {c2006.},
	series = {The Addison-Wesley series in economics},
	address = {Boston :},
	edition = {6th ed.},
	note = {Includes index.}
}