Citazione APA

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.

Stile di citazione Chicago

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.

Citazione MLA

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.