Catholic Church. Pope (1922-1939 : Pius XI), Catholic Church. Pope (1878-1903 : Leo XIII), & National Catholic Welfare Conference. (1940). Encyclical letter of His Holiness Pius XI, by Divine providence, pope ... on reconstructing the social order and perfecting it conformably to the precepts of the gospel, in commemoration of the fortieth anniversary of the encyclical "Rerum novarum." (10th printing.). National Catholic Welfare Conference.
Lua i Stíl Chicago (17ú heag.)Catholic Church. Pope (1922-1939 : Pius XI), Catholic Church. Pope (1878-1903 : Leo XIII), agus National Catholic Welfare Conference. Encyclical Letter of His Holiness Pius XI, by Divine Providence, Pope ... on Reconstructing the Social Order and Perfecting It Conformably to the Precepts of the Gospel, in Commemoration of the Fortieth Anniversary of the Encyclical "Rerum Novarum.". 10th printing. Washington, D.C.: National Catholic Welfare Conference, 1940.
Lua MLA (8ú heag.)Catholic Church. Pope (1922-1939 : Pius XI), et al. Encyclical Letter of His Holiness Pius XI, by Divine Providence, Pope ... on Reconstructing the Social Order and Perfecting It Conformably to the Precepts of the Gospel, in Commemoration of the Fortieth Anniversary of the Encyclical "Rerum Novarum.". 10th printing. National Catholic Welfare Conference, 1940.