Pius XII, P. (1956). The message of Bethlehem and problems of the day: 1955 Christmas message. National Catholic Welfare Conference.
Chicago-viite (17. p.)Pius XII, Pope. The Message of Bethlehem and Problems of the Day: 1955 Christmas Message. Washington, D.C.: National Catholic Welfare Conference, 1956.
MLA-viite (8. p.)Pius XII, Pope. The Message of Bethlehem and Problems of the Day: 1955 Christmas Message. National Catholic Welfare Conference, 1956.
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