Citação norma APA

Catholic Church. Pope (1939-1958 : Pius XII). (1939). Summi pontificatus: Encyclical letter exhorting unity in opposing world evils. Paulist Press.

Citação norma Chicago

Catholic Church. Pope (1939-1958 : Pius XII). Summi Pontificatus: Encyclical Letter Exhorting Unity in Opposing World Evils. [New York: Paulist Press, 1939.

Citação norma MLA

Catholic Church. Pope (1939-1958 : Pius XII). Summi Pontificatus: Encyclical Letter Exhorting Unity in Opposing World Evils. Paulist Press, 1939.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.