@book{4870,
	author = {Levitt, Steven D,  and Dubner, Stephen J., },
	title = {Freakonomics / },
	publisher = {Ediciones B, },
	year = {2006},
	series = {Economía y demografía},
	address = {Bogotá : },
	edition = {1a edición},
	note = {Índice análitico.}
}