APA (7th ed.) Citation

Willis, G. G. (1994). A history of early Roman liturgy to the death of Pope Gregory the Great. published for the Henry Bradshaw Society, Boydell Press.

Chicago Style (17th ed.) Citation

Willis, Geoffrey Grimshaw. A History of Early Roman Liturgy to the Death of Pope Gregory the Great. London ; Rochester, N.Y., USA: published for the Henry Bradshaw Society, Boydell Press, 1994.

MLA (8th ed.) Citation

Willis, Geoffrey Grimshaw. A History of Early Roman Liturgy to the Death of Pope Gregory the Great. published for the Henry Bradshaw Society, Boydell Press, 1994.