Pius XII, P. (1956). The message of Bethlehem and problems of the day: 1955 Christmas message. National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)Pius XII, Pope. The Message of Bethlehem and Problems of the Day: 1955 Christmas Message. Washington, D.C.: National Catholic Welfare Conference, 1956.
Lua MLA (8ú heag.)Pius XII, Pope. The Message of Bethlehem and Problems of the Day: 1955 Christmas Message. National Catholic Welfare Conference, 1956.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.