Catholic Church. Pope (1922-1939 : Pius XI) & Treacy, G. C. Atheistic communism: Encyclical letter of His Holiness Pope Pius XI (with discussion club outline). Paulist Press.
Citação do estilo Chicago (17ª ed.)Catholic Church. Pope (1922-1939 : Pius XI) e Gerald C. Treacy. Atheistic Communism: Encyclical Letter of His Holiness Pope Pius XI (with Discussion Club Outline). New York: Paulist Press.
Citação MLA (8ª ed.)Catholic Church. Pope (1922-1939 : Pius XI) e Gerald C. Treacy. Atheistic Communism: Encyclical Letter of His Holiness Pope Pius XI (with Discussion Club Outline). Paulist Press.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.