Analysis of information sources in references of the Wikipedia article "Qara Qoyunlu" in Vietnamese language version.
The argument that there was a clear-cut contrast between the Sunnism of the Āq Qoyunlū and the Shiʿism of the Qara Qoyunlū and the Ṣafawīya rests mainly on later Safavid sources and must be considered doubtful.
