TURK KULTURU VE HACI BEKTAS VELI-ARASTIRMA DERGISI, sa.49, ss.11-21, 2009 (AHCI)
We have the practicing certificates which have an important role in written documents of Alevism-Bektashism that were especially written after 1800s. Almost all the practicing certificates given by Had Bektash Associations have the same text and style. It can be said that only the dates and people they were given are different.