Catholic Church. Pope (1922-1939 : Pius XI) & Pius XI, P. (1931). On social reconstruction: Encyclical letter. Daughters of St. Paul.
Lua i Stíl Chicago (17ú heag.)Catholic Church. Pope (1922-1939 : Pius XI) agus Pope Pius XI. On Social Reconstruction: Encyclical Letter. Boston, Mass.: Daughters of St. Paul, 1931.
Lua MLA (8ú heag.)Catholic Church. Pope (1922-1939 : Pius XI) agus Pope Pius XI. On Social Reconstruction: Encyclical Letter. Daughters of St. Paul, 1931.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.