Catholic Church. Pope (1922-1939 : Pius XI), Catholic Church. Pope (1914-1922 : Benedict XV), & Treacy, G. C. (1944). On the foreign missions. America Press.
Chicago Style (17th ed.) CitationCatholic Church. Pope (1922-1939 : Pius XI), Catholic Church. Pope (1914-1922 : Benedict XV), and Gerald C. Treacy. On the Foreign Missions. New York: America Press, 1944.
MLA (8th ed.) CitationCatholic Church. Pope (1922-1939 : Pius XI), et al. On the Foreign Missions. America Press, 1944.
Warning: These citations may not always be 100% accurate.