Il Sillabo e la politica dei cattolici - Pepe, Gabriele, 1899-1971.; Catholic Church. Pope (1846-1878 : Pius IX).; Catholic Church. Pope (1846-1878 : Pius IX). (Roma, Capriotti, 1945)
"Enciclica 'Quanta cura'": 45-54.
Keywords: Catholic Church -- Doctrinal and controversial works -- Catholic authors