45:4 Pagina 46, 53. Infailibilitate - Cu privire la doctrina infailibilitatii, asa cum a fost stabilita la Conciliul Vatican din anul 1870-1871, vezi Philip Schaff. The Creeds of Christendom, vol. 2, Dogmatic Decrees of the Vatican Council, pp. 234-271, unde sunt date atat textul latin, cat si cel englez. Pentru discutie, vezi conceptia romano-catolica, The Catholic Encyclopedia, vol. 7, art. "Infallibility" de Patrick J. Toner, p. 790; James Cardinal Gibbons, the Faith of Our Fathers (Baltimore: John Murphy Company, ed. 110 din 1917), cap. 7,11. Pentru opozitia romano-catolica fata de doctrina infailibilitatii papale, vezi Johann Joseph Ignaz von Döllinger (Pseudonim "Janus") The Pope and the Council (New York: Charles Scribner's Sons 1869); si W.J. Sparrow Simpson, Roman-Catholic Opposition to Papal Infallibility (London: John Murray, 1909). Pentru conceptia necatolica, vezi George Salmon, Infallibility of the Church (London: John Murray, ed. rev. 1914).