APA-referens (7:e uppl.)

Catholic Church. Pope (1914-1922 : Benedict XV) & Benedict XV, P. Spread the faith throughout the world: An apostolic letter of His Holiness Pope Benedict XV. Society for the Propagation of the Faith.

Chicago-referens (17:e uppl.)

Catholic Church. Pope (1914-1922 : Benedict XV) och Pope Benedict XV. Spread the Faith Throughout the World: An Apostolic Letter of His Holiness Pope Benedict XV. New York: Society for the Propagation of the Faith.

MLA-referens (8:e uppl.)

Catholic Church. Pope (1914-1922 : Benedict XV) och Pope Benedict XV. Spread the Faith Throughout the World: An Apostolic Letter of His Holiness Pope Benedict XV. Society for the Propagation of the Faith.