Citazione APA

Pius, P. C. C. P. (1932). Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C..

Stile di citazione Chicago

Pius, Pope; Catholic Church. Pope. Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1932.

Citazione MLA

Pius, Pope; Catholic Church. Pope. Encyclical Letter of His Holiness, Pope Pius XI. Washington, D.C., 1932.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.