Columbia subject headings:
Bektashi--History--Congresses.
Nosairians--History--Congresses.
Sufism--History--Congresses.
Harvard subject headings:
Bektashi--Congresses.
Bektashi--History--Congresses.
Bektashi--Turkey--Congresses.
Nosairians--History--Congresses.
Shiites--Turkey--Congresses.
Sufism--History--Congresses.
Sufism--Turkey--History--Congresses.
Princeton subject headings:
Bektashi--History--Congresses.
Islamic sects--Turkey--Congresses.
Nosairians--History--Congresses.
Sufism--Turkey--Congresses.
Turkey--Religion--Congresses.