Professor of Liturgy
Introduction to Liturgy
Contemporary Sacramental & Liturgical Practice
Liturgy & Time
Ministry & Theology of Sacrament of Reconciliation
Sacraments of Initiation
Catholic Sacraments: A Rich Sources of Blessings, co-edited with David Farina Turnbloom, Paulist Press, 2015.
Co-editor, Commentary on the Order of Mass of the Roman Missal, Collegeville: Liturgical Press, 2011
The Urban Character of Christian Worship; The Origins, Development and Meaning of Stational Liturgy. Orientalia Christiana Analecta 228, Rome, Pontifical Oriental Institute Press, 1987. Reprint 2002.
Liturgy in Ancient Jerusalem, Alcuin/GROW Studies in Worship, Bramcote, Nottingham: Grove Books, 1989.
Worship: City, Church and Renewal, Washington, DC: Pastoral Press, 1991.
Bread of Life, Cup of Salvation: Understanding the Mass, Lanham (Md): Rowman and Littlefield, 2003.
Reforming the Liturgy: A Response to the Critics, Collegeville: Liturgical Press, 2008.