@book{164862,
	author = {Say, Jean Baptiste,  and Sanchez Rivera, Juan.},
	title = {Tratado de Economia Politica },
	editor = {Imp. de Fermin Villalpando)},
	publisher = {[s.n.], },
	year = {1821 (},
	address = {Madrid : },
	edition = {4ª ed. corr. y acum.}
}