Pope John Paul II (1991). “Encyclical Letter Redemptoris Missio of the Supreme Pontiff John Paul II on the Permanent Validity of the Church's Missionary Mandate”
Pope John Paul II (2003). “The Eucharist in the life of the church: encyclical letter of Pope John Paul II, Ecclesia de eucharistia, with three presentations from the 3rd Nigerian National Eucharistic Congress, Ibadan, November 15-17, 2002”