APA (7e ed.) Bronvermelding

John XXIII, P. (1963). A prodigy of celestial grace: Address of His Holiness Pope John XXIII, March 17, 1963. National Catholic Welfare Conference.

Chicago (17e ed.) Bronvermelding

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.

MLA (8e ed.) Bronvermelding

John XXIII, Pope. A Prodigy of Celestial Grace: Address of His Holiness Pope John XXIII, March 17, 1963. National Catholic Welfare Conference, 1963.