John Paul II, P. (1981). Letter of His Holiness John Paul II to the bishops of the Catholic Church for the 1600th anniversary of the First Council of Constantinople and the 1550th anniversary of the Council of Ephesus, March 25, 1981. St. Paul Editions.
Chicago Style (17th ed.) CitationJohn Paul II, Pope. Letter of His Holiness John Paul II to the Bishops of the Catholic Church for the 1600th Anniversary of the First Council of Constantinople and the 1550th Anniversary of the Council of Ephesus, March 25, 1981. Boston, MA: St. Paul Editions, 1981.
MLA (8th ed.) CitationJohn Paul II, Pope. Letter of His Holiness John Paul II to the Bishops of the Catholic Church for the 1600th Anniversary of the First Council of Constantinople and the 1550th Anniversary of the Council of Ephesus, March 25, 1981. St. Paul Editions, 1981.