Pius XII, P. (1945). Pius XII and democracy: Christmas message of Pope Pius XII, December 24, 1944. Paulist Press.
Chicago-viite (17. p.)Pius XII, Pope. Pius XII and Democracy: Christmas Message of Pope Pius XII, December 24, 1944. [New York. N.Y.: Paulist Press, 1945.
MLA-viite (8. p.)Pius XII, Pope. Pius XII and Democracy: Christmas Message of Pope Pius XII, December 24, 1944. Paulist Press, 1945.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.