@book{1992,
	author = {Álvarez Reyes, Néstor and  Antonio Garavito Rodriguez.},
	title = {Curso básico de economía /},
	publisher = {McGraw Hill,},
	year = {1999},
	address = {Santafé de Bogotá :},
	edition = {Segunda edición},
	note = {Incluye índice.}
}