^Riley-Smith, Jonathan, The Crusades: A History, (Continuum International Publishing Group, 1987), 275.
^Skënderbeu: Jeta dhe vepra by Kristo Frashëri, p. 130.
^Houtsma، Martijn Theodoor (1993)، First encyclopaedia of Islam: 1913-1936، Netherlands: E.J. Brill and Luzac and Co.، ج. VIII، ص. 466، ISBN:9789004097940، مؤرشف من الأصل في 2016-03-31، "In the beginning of November 1443, Turakhan Beg commanded one of the Ottoman corps in the battle against John Hunyadi.
^Babinger، Franz (1992)، Mehmed the Conqueror and His Time، Princeton University Press، ص. 25، ISBN:978-0-691-01078-6، مؤرشف من الأصل في 2022-04-17، The combined host met Ottoman forces first on November 3, 1443, between the castle of Bolvan (near Aleksinac) and the city of Niš. Here Kasim Bey, then governor of Rumelia, Ishak Bey and other standard bearers were defeated.
^Sir Hamilton Alexander Rosskeen Gibb؛ Bernard Lewis؛ Charles Pellat؛ Joseph Schacht (1973). The Encyclopaedia of Islam. Brill. ص. 139. مؤرشف من الأصل في 2022-04-17. ... Iskender, feeing from the camp of Kasim, the beglerbey of Rumeli...
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