Somerville, R., & Brasington, B. C. (1998). Prefaces to canon law books in Latin Christianity: Selected translations, 500-1245. Yale University Press.
Čikaški stil citiranja (17. izdanje)Somerville, Robert, i Bruce Clark Brasington. Prefaces to Canon Law Books in Latin Christianity: Selected Translations, 500-1245. New Haven: Yale University Press, 1998.
MLA način citiranja (8. izdanje)Somerville, Robert, i Bruce Clark Brasington. Prefaces to Canon Law Books in Latin Christianity: Selected Translations, 500-1245. Yale University Press, 1998.
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