John XXIII, P. (1963). A prodigy of celestial grace: Address of His Holiness Pope John XXIII, March 17, 1963. National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)John XXIII, Pope. A Prodigy of Celestial Grace: Address of His Holiness Pope John XXIII, March 17, 1963. Washington, D.C.: National Catholic Welfare Conference, 1963.
Lua MLA (8ú heag.)John XXIII, Pope. A Prodigy of Celestial Grace: Address of His Holiness Pope John XXIII, March 17, 1963. National Catholic Welfare Conference, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.