APA način citiranja (7. izdanje)
Petkov, K. (2008). The voices of medieval Bulgaria, seventh-fifteenth century: The records of a bygone culture. Brill.
Čikaški stil citiranja (17. izdanje)
Petkov, Kiril. The Voices of Medieval Bulgaria, Seventh-fifteenth Century: The Records of a Bygone Culture. Leiden ; Boston [Mass.]: Brill, 2008.
MLA način citiranja (9. izdanje)
Petkov, Kiril. The Voices of Medieval Bulgaria, Seventh-fifteenth Century: The Records of a Bygone Culture. Brill, 2008.
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