DC John Paul II, Letter Dominicae Cenae on the Mystery and Worship of the Eucharist, 24 February 1980.

DV Second Vatican Council, Dogmatic Constitution on Divine Revelation Dei Verbum.

GIRM General Instruction of the Roman Missal, 27 March 1975.

GS Second Vatican Council, Dogmatic Constitution on the Church in the Modern World Gaudium et Spes.

ID Sacred Congregation for the Sacraments and Divine Worship, Instruction Inaestimabile Donum on Certain Norms Concerning Worship of the Eucharistic Mystery, 17 April 1980.

ILM Introduction to the Lectionary for Mass, 21 January 1981.

LG  Second Vatican Council, Dogmatic Constitution on the Church Lumen Gentium.

MD  Pius XII, Encyclical Letter on the Sacred Liturgy Mediator Dei, 20 November 1947.

MF   Paul VI, Encyclical Letter on the Holy Eucharist Mysterium Fidei, 3 September 1965.

PO Second Vatican Council, Decree on the Ministry and Life of Priests Presbyterorum Ordinis.

SC Second Vatican Council, Dogmatic Constitution on the Sacred Liturgy Sacrosanctum Concilium.