The Diatessaron and Ephrem Syrus as sources of Romanos the Melodist / by William L. Petersen. - Petersen, William Lawrence, 1950- (OLS)http://pul/name/15453 (E. Peeters, 1985)
Index: p. [201]-213.
Bibliographie: p. [ix]-xxvi.

Pio XI (Achille Ratti) : MDCCCLVII-MXMXXII / A. Novelli. - Novelli, Angelo, sac. (OLS)http://pul/name/17736 (Casa editrice "Pro familia", 1923)
Front. con incisione (stemma).
Contiene indici.