Henning, J. (2009). Byzantium, Pliska, and the Balkans. De Gruyter.
Chicago-čujuhus (17. p.)Henning, Joachim. Byzantium, Pliska, and the Balkans. Berlin/Boston: De Gruyter, 2009.
MLA-čujuhus (9. p.)Henning, Joachim. Byzantium, Pliska, and the Balkans. De Gruyter, 2009.
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