@book{66785,
	author = {Helpman, Elhanan and Helpman, Elhanan},
	title = {El comercio internacional},
	publisher = {Fondo de Cultura Económica, },
	year = {2016},
	series = {Breviarios},
	address = {[México D.C., Mexico] :},
	url = {https://public.digitaliapublishing.com/a/64255}
}