Catholic Church. Pope (1963-1978 : Paul VI). (1971). Apostolic constitution on the Breviary. United States Catholic Conference.
Chicago Style (17th ed.) CitationCatholic Church. Pope (1963-1978 : Paul VI). Apostolic Constitution on the Breviary. Washington, D.C.: United States Catholic Conference, 1971.
MLA (8th ed.) CitationCatholic Church. Pope (1963-1978 : Paul VI). Apostolic Constitution on the Breviary. United States Catholic Conference, 1971.
Warning: These citations may not always be 100% accurate.