Columbia subject headings:
Bektashi--Bulgaria.
Islamic sects--Bulgaria.
Sufism--Bulgaria--Customs and practices.
Turks--Bulgaria--Religion.
Harvard subject headings:
Alevis--Bulgaria.
Bektashi--Bulgaria.
Islamic sects--Bulgaria.
Muslims--Bulgaria
Shiites--Bulgaria.
Turks--Bulgaria
Princeton subject headings:
Islamic sects--Bulgaria.
Nosairians--Bulgaria.