The Cathedral from the Romanesque to the Gothic Architecture: The Theological Background, Pope Benedict XVI, General Audience, 18 November 2009
Sacrosanctum Concilium (Constitution on the Sacred Liturgy), Pope Paul VI, 1963 (notably Chapter I, section III E. and Chapters XI and XII)
Sacred Architecture: Encountering the Beauty and Mystery of God, Cardinal Justin Rigali, keynote address, Washington, DC, 2010