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Erdoğan Altınkaynak, Yer Altı Diyarının Kartalı, Hacı Bektaş Veli Araştırma Dergisi, 26, 135 – 163 (2003), [8 March 2014], （原始内容存档于8 March 2014） （土耳其语）
Erdoğan Altınkaynak, Yer Altı Diyarının Kartalı, Hacı Bektaş Veli Araştırma Dergisi, 26, 135 – 163 (2003), [8 March 2014], （原始内容存档于8 March 2014） （土耳其语）
