Storia della Chiesa - Fliche, Augustin. (OLS)http://ftis/name/52369; Martin, Victor. (OLS)http://ftis/name/52370; Frutaz, Amato Pietro. (OLS)http://ftis/name/54081; Jarry, Eugène. (OLS)http://ftis/name/54080; Duroselle, Jean-Baptiste. (OLS)http://ftis/name/54079 (L.I.C.E. - Berruti ; Paoline ; Editrice S.A.I.E. ; San Paolo, 1942)