Title: Music and Ceremony at Notre Dame of Paris, 500-1550, Author: Craig Wright
Title: Introduction to the English Monastic Breviaries, Author: J.B.L. Tolhurst
Title: The Leofric Missal: I. Introduction, Collation Tables and Index, Author: Nicholas Orchard
Title: Invisible Weapons: Liturgy and the Making of Crusade Ideology, Author: M. Cecilia Gaposchkin