APA (7th ed.) Citation

Catholic Church. Pope (1922-1939 : Pius XI) & Pius XI, P. (1939). St. Francis, yesterday and today: The great social reformer evaluated. Franciscan Herald Press.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1922-1939 : Pius XI) and Pope Pius XI. St. Francis, Yesterday and Today: The Great Social Reformer Evaluated. Chicago: Franciscan Herald Press, 1939.

MLA (8th ed.) Citation

Catholic Church. Pope (1922-1939 : Pius XI) and Pope Pius XI. St. Francis, Yesterday and Today: The Great Social Reformer Evaluated. Franciscan Herald Press, 1939.

Warning: These citations may not always be 100% accurate.