Pius, P. C. C. P. (1936). Motion Pictures, Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C..
Chicago-referens (17:e uppl.)Pius, Pope; Catholic Church. Pope. Motion Pictures, Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1936.
MLA-referens (8:e uppl.)Pius, Pope; Catholic Church. Pope. Motion Pictures, Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1936.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.