Pius XII, P. J. B. H. G. C. T. (1944). Pius XII and Democracy, Christmas Message of ... December 24, 1944. New York.
Chicago-viite (17. p.)Pius XII, Pope; John B Harney; Gerald C Treacy. Pius XII and Democracy, Christmas Message of ... December 24, 1944. New York, 1944.
MLA-viite (8. p.)Pius XII, Pope; John B Harney; Gerald C Treacy. Pius XII and Democracy, Christmas Message of ... December 24, 1944. New York, 1944.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.