@book{123452,
	author = {Roberston, Richard.},
	title = {¿Quiere usted saber italiano en diez días? },
	publisher = {Ramón Sopena, },
	year = {1961.},
	series = {Métodos `Roberston`},
	address = {Barcelona : },
	edition = {novísima edición corregida y aumentada.}
}