Columbia subject headings:
Dervishes--Turkey--Istanbul.
Islamic monasticism and religious orders--Turkey--Istanbul.
Sufism--Turkey--Istanbul.
Harvard subject headings:
Dervishes--Turkey--Istanbul.
Islamic monasticism and religious orders--Turkey--Istanbul.
Sufism--Turkey--Istanbul.
Princeton subject headings:
Dervishes--Turkey--Istanbul.
Islamic monasticism and religious orders--Turkey--Istanbul.
Sufism--Turkey--Istanbul.