@book{30821,
	author = {Cardoso, Ciro Flamarion Santana. and Pérez Brignoli, Héctor,},
	title = {Los métodos de la historia :},
	publisher = {Editorial Crítica,},
	year = {c1976.},
	series = {Estudios y ensayos;},
	address = {Barcelona :},
	edition = {2a ed.}
}