@book{30113,
	author = {Barraclough, Geoffrey. and Sánchez Gil, Cecilio.},
	title = {Introducción a la historia contemporánea / },
	publisher = {Gredos, },
	year = {[1980]},
	series = {Biblioteca universitaria Gredos. II. Ensayos ; },
	address = {Madrid : },
	edition = {[1ª ed., reimp.].}
}