Catholic Church. Pope (1939-1958 : Pius XII). (1939). Summi pontificatus: Encyclical letter exhorting unity in opposing world evils. Paulist Press.
Chicago-Zitierstil (17. Ausg.)Catholic Church. Pope (1939-1958 : Pius XII). Summi Pontificatus: Encyclical Letter Exhorting Unity in Opposing World Evils. [New York: Paulist Press, 1939.
MLA-Zitierstil (8. Ausg.)Catholic Church. Pope (1939-1958 : Pius XII). Summi Pontificatus: Encyclical Letter Exhorting Unity in Opposing World Evils. Paulist Press, 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.