John XXIII, P. (1961). The Holy Father speaks to athletes. National Catholic Welfare Conference.
Citace podle Chicago (17th ed.)John XXIII, Pope. The Holy Father Speaks to Athletes. Washington: National Catholic Welfare Conference, 1961.
Citace podle MLA (8th ed.)John XXIII, Pope. The Holy Father Speaks to Athletes. National Catholic Welfare Conference, 1961.
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