The General Instruction of the Roman Missal (Third Typical Edition) provides specific detail about each element of the Order of Mass celebrated in accordance with the Roman Missal, Third Edition (implemented 27 November 2011). Image links to Vatican translation.
In The Spirit of The Liturgy, Cardinal Ratzinger endeavors to foster understanding and appreciation of “the liturgy in all its beauty, hidden wealth, and time-transcending grandeur, to see it as the animating center of the Church, the very center of Christian life.” Originally published in the year 2000. ISBN recommendation:0-89870-784-6
The official daily prayers of the Roman Catholic Church. The current form, revised after Vatican II, was published and released 11 April 1971 with the approval of Pope Paul VI. Image links to free Liturgy of the Hours website. ISBN recommendation: 0899424090