Ensel, Remco (2002). The Role of the Bektashis in Turkey's National Struggle. Brill Academic Publishers. See pp. 21–22
Trimmingham, J. Spencer (1971). The Sufi orders in Islam. Clarendon Press, Oxford. ISBN0-19-826524-7
References
^Balcıoğlu, Tahir Harimî, Türk Tarihinde Mezhep Cereyanları - The course of madhhab events in Turkishhistory, (Preface and notes by Hilmi Ziya Ülken), Ahmet Sait Press, 271 pages, Kanaat Publications, Istanbul, 1940. (in Turkish)