Catholic Church. Pope (1922-1939 : Pius XI) & National Catholic Welfare Conference. (1942). Quadragesimo anno: Encyclical letter on reconstructing the social order. National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)Catholic Church. Pope (1922-1939 : Pius XI) agus National Catholic Welfare Conference. Quadragesimo Anno: Encyclical Letter on Reconstructing the Social Order. Washington, D.C.: National Catholic Welfare Conference, 1942.
Lua MLA (8ú heag.)Catholic Church. Pope (1922-1939 : Pius XI) agus National Catholic Welfare Conference. Quadragesimo Anno: Encyclical Letter on Reconstructing the Social Order. National Catholic Welfare Conference, 1942.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.