Cita APA (7a ed.)

Catholic Church. Pope (1922-1939 : Pius XI) & Pius XI, P. (1931). On social reconstruction: Encyclical letter. Daughters of St. Paul.

Cita Chicago Style (17a ed.)

Catholic Church. Pope (1922-1939 : Pius XI) y Pope Pius XI. On Social Reconstruction: Encyclical Letter. Boston, Mass.: Daughters of St. Paul, 1931.

Cita MLA (8a ed.)

Catholic Church. Pope (1922-1939 : Pius XI) y Pope Pius XI. On Social Reconstruction: Encyclical Letter. Daughters of St. Paul, 1931.