APA (7th ed.) Citation

Catholic Church. Pope (1963-1978 : Paul VI) & Paul VI, P. (1967). On the development of peoples =: Populorum progressio. United States Catholic Conference.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1963-1978 : Paul VI) and Pope Paul VI. On the Development of Peoples =: Populorum Progressio. Washington: United States Catholic Conference, 1967.

MLA (8th ed.) Citation

Catholic Church. Pope (1963-1978 : Paul VI) and Pope Paul VI. On the Development of Peoples =: Populorum Progressio. United States Catholic Conference, 1967.