John XXIII, P. (1961). The Holy Father speaks to athletes. National Catholic Welfare Conference.
Chicago-viite (17. p.)John XXIII, Pope. The Holy Father Speaks to Athletes. Washington: National Catholic Welfare Conference, 1961.
MLA-viite (8. p.)John XXIII, Pope. The Holy Father Speaks to Athletes. National Catholic Welfare Conference, 1961.
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