APA (7th ed.) Citation

Jasper, D., & Fuhrmann, H. (2001). Papal letters in the early Middle Ages. Catholic University of America Press.

Chicago Style (17th ed.) Citation

Jasper, Detlef, and Horst Fuhrmann. Papal Letters in the Early Middle Ages. Washington, D.C: Catholic University of America Press, 2001.

MLA (9th ed.) Citation

Jasper, Detlef, and Horst Fuhrmann. Papal Letters in the Early Middle Ages. Catholic University of America Press, 2001.