Bekenntnis statt Dogma : Kriterien der Verbidlichkeit kirchlicher Lehre - Schulz, Hans-Joachim. (OLS)http://ftis/name/63323 (Herder, 1996)

La direzione secondo i maestri spirituali - Plus, Raoul. (OLS)http://ftis/name/53648; Testore, Celestino. (OLS)http://ftis/name/55994 (Marietti, 1935)