Catholic Church. Pope (1939-1958 : Pius XII). (1950). Humani generis: Encyclical letter of Pope Pius XII concerning some false opinions which treaten to undermine the foundations of Catholic doctrine. National Catholic Welfare Conference.
Chicago-viite (17. p.)Catholic Church. Pope (1939-1958 : Pius XII). Humani Generis: Encyclical Letter of Pope Pius XII Concerning Some False Opinions Which Treaten to Undermine the Foundations of Catholic Doctrine. Washington, D.C.: National Catholic Welfare Conference, 1950.
MLA-viite (8. p.)Catholic Church. Pope (1939-1958 : Pius XII). Humani Generis: Encyclical Letter of Pope Pius XII Concerning Some False Opinions Which Treaten to Undermine the Foundations of Catholic Doctrine. National Catholic Welfare Conference, 1950.