@book{73769,
	author = {Menéndez Pidal, Ramón,},
	title = {Orígenes del español},
	publisher = {Espasa-Calpe},
	year = {1950.},
	series = {His Obras, t. 8},
	address = {Madrid},
	edition = {3. ed., muy corr. y adicionada.}
}