Cita APA (7a ed.)

Hartmann, W., & Pennington, K. (2008). The history of medieval canon law in the Classical Period, 1140-1234: From Gratian to the Decretals of Pope Gregory IX. The Catholic University of America Press.

Cita Chicago Style (17a ed.)

Hartmann, Wilfried, y Kenneth Pennington. The History of Medieval Canon Law in the Classical Period, 1140-1234: From Gratian to the Decretals of Pope Gregory IX. Washington, D.C.: The Catholic University of America Press, 2008.

Cita MLA (9a ed.)

Hartmann, Wilfried, y Kenneth Pennington. The History of Medieval Canon Law in the Classical Period, 1140-1234: From Gratian to the Decretals of Pope Gregory IX. The Catholic University of America Press, 2008.