@book{106119,
	author = {Marañón y Posadillo, Gregorio,},
	title = {El conde-duque de Olivares},
	publisher = {Espasa-Calpe},
	year = {1965.},
	address = {Madrid},
	edition = {5a. ed.},
	note = {At head of title: G. Marañon.}
}