APA

John XXIII, . (1963). Encyclical letter "World peace" (Pacem in terris) of His Holiness John XXIII by divine providence Pope to his venerable brothers, the patriarchs, primates, archbishops, bishops, and other local ordinaries, in peace and communion with the Apostolic see, to. Melbourne: The Australian Catholic Truth Society.

Chicago

John XXIII, . 1963. Encyclical letter "World peace" (Pacem in terris) of His Holiness John XXIII by divine providence Pope to his venerable brothers, the patriarchs, primates, archbishops, bishops, and other local ordinaries, in peace and communion with the Apostolic see, to. Melbourne: The Australian Catholic Truth Society.

Harvard

John XXIII, . (1963). Encyclical letter "World peace" (Pacem in terris) of His Holiness John XXIII by divine providence Pope to his venerable brothers, the patriarchs, primates, archbishops, bishops, and other local ordinaries, in peace and communion with the Apostolic see, to. Melbourne: The Australian Catholic Truth Society.

MLA

John XXIII, . Encyclical letter "World peace" (Pacem in terris) of His Holiness John XXIII by divine providence Pope to his venerable brothers, the patriarchs, primates, archbishops, bishops, and other local ordinaries, in peace and communion with the Apostolic see, to. Melbourne: The Australian Catholic Truth Society. 1963.