Pius XII, P. (1951). To all who are in prison: A message. National Catholic Welfare Conference.
Chicago-viite (17. p.)Pius XII, Pope. To All Who Are in Prison: A Message. Washington, D.C.: National Catholic Welfare Conference, 1951.
MLA-viite (8. p.)Pius XII, Pope. To All Who Are in Prison: A Message. National Catholic Welfare Conference, 1951.
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