@book{14839,
	author = {Leighton, Richard I.  and Sykes, A. O.,},
	title = {Economics of international trade /},
	publisher = {The maple press ;},
	year = {1970.},
	series = {Economic approaches to law ;},
	address = {USA :},
	url = {http://www.loc.gov/catdir/toc/fy14pdf03/2012946657.html}
}