Apostolate its significance in God's design / Patrick P. d'Souza. - Souza, Patrick D. de. (OLS)http://pul/name/106179; Pontificium Athenaeum Urbanianum. Facultas theologica. Tesi. (OLS)http://pul/name/105974 (St. Anselm's press, 1957)
Tesi. Pontifical Urban University de Propaganda Fide. Faculty of Theology. 1957.
Bibliografia in nota a piè pagina.