John XXIII, P. (1963). Letter of his holiness Pope John XXIII: To the most reverend ordinaries and major superiors of the religious congregations of the Church in the United States (April 21, 1963) : an expression of appreciation for their cooperation in supplying personnel to the church in Latin America. National Catholic Welfare Conference.
Chicago-viite (17. p.)John XXIII, Pope. Letter of His Holiness Pope John XXIII: To the Most Reverend Ordinaries and Major Superiors of the Religious Congregations of the Church in the United States (April 21, 1963) : An Expression of Appreciation for Their Cooperation in Supplying Personnel to the Church in Latin America. Washington, D.C.: National Catholic Welfare Conference, 1963.
MLA-viite (8. p.)John XXIII, Pope. Letter of His Holiness Pope John XXIII: To the Most Reverend Ordinaries and Major Superiors of the Religious Congregations of the Church in the United States (April 21, 1963) : An Expression of Appreciation for Their Cooperation in Supplying Personnel to the Church in Latin America. National Catholic Welfare Conference, 1963.