@book{156957,
	author = {Menéndez Pidal, Ramón,},
	title = {El idioma espanõl en sus primeros tiempos.},
	publisher = {Espasa-Calpe, S.A.},
	year = {1968.},
	series = {Coleccion Austral},
	address = {Madrid},
	edition = {7 ma ed.}
}