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.
Cita Chicago Style (17a ed.)Catholic Church. Pope (1922-1939 : Pius XI) y National Catholic Welfare Conference. Quadragesimo Anno: Encyclical Letter on Reconstructing the Social Order. Washington, D.C.: National Catholic Welfare Conference, 1942.
Cita MLA (8a ed.)Catholic Church. Pope (1922-1939 : Pius XI) y National Catholic Welfare Conference. Quadragesimo Anno: Encyclical Letter on Reconstructing the Social Order. National Catholic Welfare Conference, 1942.
Precaución: Estas citas no son 100% exactas.