@book{868,
	author = {Salvatore, Dominick and Arango Medina, Gladys},
	title = {Economía internacional / },
	publisher = {McGraw-Hill,},
	year = {1998.},
	series = {[Schaum teoría y problemas]},
	address = {Santa Fe de Bogotá :},
	edition = {4a. ed.}
}