Columbia subject headings:
Islam--Doctrines.
Shīʻah--Doctrines.
Shīʻah--Relations--Sufism.
Sufism--Doctrines.
Sufism--Relations--Shīʻah.
Harvard subject headings:
Islam--Doctrines
Shīʻah--Doctrines.
Shīʻah--Relations--Sufism.
Sufism--Doctrines.
Sufism--Relations--Shīʻah.
Princeton subject headings:
Islam--Doctrines.
Shīʻah--Doctrines.
Shīʻah--Relations--Sufism.
Sufism--Doctrines.
Sufism--Relations.