Rice, Eric. 2009. Music and Ritual at Charlemagne’s Marienkirche in Aachen. Beiträge zur Rheinischen Musikgeschichte.  Kassel: Merseburger Verlag.

Flynn, Jane. 2008. Thomas Mulliner: an Apprentice of John Heywood? Young Choristers, 650-1700, Studies in Medieval and Renaissance Music. edited by Jane Flynn, 173-194. Boydell Press.