Pennington, K., & Hartmann, W. (2008). The (History of Medieval Canon Law) history of medieval canon law in the classical period, 1140-1234: From Gratian to the decretals of Pope Gregory IX. Catholic University of America Press.
Cita Chicago Style (17a ed.)Pennington, Kenneth, y Wilfried Hartmann. The (History of Medieval Canon Law) History of Medieval Canon Law in the Classical Period, 1140-1234: From Gratian to the Decretals of Pope Gregory IX. Washington, D.C.: Catholic University of America Press, 2008.
Cita MLA (8a ed.)Pennington, Kenneth, y Wilfried Hartmann. The (History of Medieval Canon Law) History of Medieval Canon Law in the Classical Period, 1140-1234: From Gratian to the Decretals of Pope Gregory IX. Catholic University of America Press, 2008.