Pius, P. C. C. P. (1932). Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C..
Chicago-Zitierstil (17. Ausg.)Pius, Pope; Catholic Church. Pope. Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1932.
MLA-Zitierstil (8. Ausg.)Pius, Pope; Catholic Church. Pope. Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1932.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.