@book{7769,
	author = {Ramírez, Sergio},
	title = {Puertas abiertas :},
	publisher = {Fondo de Cultura Económica,},
	year = {2013.},
	series = {Tierra firme},
	address = {México :},
	edition = {1a ed.},
	note = {Incluye índice}
}