Enciclopedia liturgica - Baud, M. L. (OLS)http://ftis/name/86505; Aigrain, René. (OLS)http://ftis/name/56108 (Paoline,, 1957)

The Pastoral Epistles : A Commentary on the Pastoral Epistles - Dibelius, Martin. (OLS)http://ftis/name/58308; Koester, Helmut. (OLS)http://ftis/name/58238; Buttolph, Philip. (OLS)http://ftis/name/58314; Conzelmann, Hans. (OLS)http://ftis/name/58239 (Hermeneia, [Nuovo Testamento], 1972)