@book{187239,
	author = {Santos Guerra, Miguel Ángel.},
	title = {Una tarea contradictoria},
	publisher = {Magisterio del Río de la Plata},
	year = {c2001.},
	series = {Colección : Respuestas educativas},
	address = {Buenos Aires},
	note = {Includes bibliographical references.}
}