@book{243971,
	author = {Ratzinger, Joseph and Seewald, Peter.},
	title = {La sal de la tierra},
	publisher = {Ediciones Palabra},
	year = {2006.},
	series = {Libros Palabra},
	address = {Madrid},
	edition = {Novena edición},
	note = {Subtitle on cover : Quién es y cómo piensa Benedicto XVI}
}