APA-čujuhus (7. p.)
ebrary, Inc, 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. Catholic University of America Press.
Chicago-čujuhus (17. p.)
ebrary, Inc, Wilfried Hartmann, juo 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.: Catholic University of America Press, 2008.
MLA-čujuhus (9. p.)
ebrary, Inc, et al. The 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.
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