APA (7 ম সংস্করণ) উদ্ধৃতি

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.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Catholic Church. Pope (1922-1939 : Pius XI) এবং Gerald C. Treacy. Atheistic Communism: Encyclical Letter of His Holiness Pope Pius XI (with Discussion Club Outline). New York: Paulist Press.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Catholic Church. Pope (1922-1939 : Pius XI) এবং Gerald C. Treacy. Atheistic Communism: Encyclical Letter of His Holiness Pope Pius XI (with Discussion Club Outline). Paulist Press.