Catholic Church. Pope (1939-1958 : Pius XII) & Pius XII, P. On function of state in the modern world: Encyclical letter of His Holiness Pope Pius XII. St. Paul Editions.
Chicago-viite (17. p.)Catholic Church. Pope (1939-1958 : Pius XII) ja Pope Pius XII. On Function of State in the Modern World: Encyclical Letter of His Holiness Pope Pius XII. Boston: St. Paul Editions.
MLA-viite (8. p.)Catholic Church. Pope (1939-1958 : Pius XII) ja Pope Pius XII. On Function of State in the Modern World: Encyclical Letter of His Holiness Pope Pius XII. St. Paul Editions.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.