Catholic Church. Pope (1958-1963 : John XXIII) & John XXIII, P. (1961). Encyclical letter of His Holiness John XXIII ... on recent developments of the social question in the light of Christian teaching =: Mater et magistra. St. Paul Editions.
Chicago-referens (17:e uppl.)Catholic Church. Pope (1958-1963 : John XXIII) och Pope John XXIII. Encyclical Letter of His Holiness John XXIII ... on Recent Developments of the Social Question in the Light of Christian Teaching =: Mater Et Magistra. Boston: St. Paul Editions, 1961.
MLA-referens (8:e uppl.)Catholic Church. Pope (1958-1963 : John XXIII) och Pope John XXIII. Encyclical Letter of His Holiness John XXIII ... on Recent Developments of the Social Question in the Light of Christian Teaching =: Mater Et Magistra. St. Paul Editions, 1961.