The Book of Dede Korkut (F.Sumer, A.Uysal, W.Walker изд.). University of Texas Press. 1972. стр. Introduction. ISBN0-292-70787-8.. "Better known as Turkomans... the interim Ak-Koyunlu and Karakoyunlu dynasties..."
Arjomand, Saïd Amir (2016). „Unity of the Persianate World under Turko-Mongolian Domination and Divergent Development of Imperial Autocracies in the Sixteenth Century”. Journal of Persianate Studies. 9 (1): 11. doi:10.1163/18747167-12341292. „The disintegration of Timur’s empire into a growing number of Timurid principalities ruled by his sons and grandsons allowed the remarkable rebound of the Ottomans and their westward conquest of Byzantium as well as the rise of rival Turko-Mongolian nomadic empires of the Aq Qoyunlu and Qara Qoyunlu in western Iran, Iraq, and eastern Anatolia. In all of these nomadic empires, however, Persian remained the official court language and the Persianate ideal of kingship prevailed.”
Ак Којунлу at Encyclopædia Iranica; "Christian sedentary inhabitants were not totally excluded from the economic, political, and social activities of the Āq Qoyunlū state and that Qara ʿOṯmān had at his command at least a rudimentary bureaucratic apparatus of the Iranian-Islamic type. [...] With the conquest of Iran, not only did the Āq Qoyunlū center of power shift eastward, but Iranian influences were soon brought to bear on their method of government and their culture."
