APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

Catholic Church. Pope (1922-1939 : Pius XI), Catholic Church. Pope (1878-1903 : Leo XIII), en 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.

MLA (8e ed.) Bronvermelding

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.