Introduction to Christianity / Joseph Cardinal Ratzinger ; translated by J. R. Foster ; with a new preface translated by Michael J. Miller. - Benedictus PP. XVI, 1927-2022. (OLS)http://pul/name/14991; Foster, J. R. (OLS)http://pul/name/74542; Miller, Michael J. (OLS)http://pul/name/74543 (Ignatius Press, 2004)
Include riferimenti bibliografici ed indice.

La vita religiosa / Antonio Royo Marin. - Royo Marín, Antonio, O.P., 1913- (OLS)http://pul/name/6315 (Ed. Paoline, 1968)
Include indici.
Bibliografia in nota.