@book{8372,
	author = {Banco Nacional de Comercio Exterior and Ortiz Hernán, Sergio},
	title = {Comercio exterior},
	publisher = {Banco Nacional de Comercio Exterior},
	year = {1977},
	address = {México :},
	url = {https://biblioeco.unsa.edu.ar/pmb/images/revistas/Comercio Exterior.jpg}
}