John XXIII, P. (1959). The Holy Father speaks to teachers. National Catholic Welfare Conference.
Citace podle Chicago (17th ed.)John XXIII, Pope. The Holy Father Speaks to Teachers. Washington, D.C.: National Catholic Welfare Conference, 1959.
Citace podle MLA (8th ed.)John XXIII, Pope. The Holy Father Speaks to Teachers. National Catholic Welfare Conference, 1959.
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