Columbia subject headings:
Harvard subject headings:
Islam--Apologetic works--Early works to 1800
Islam--Doctrines--Early works to 1800
Taqlīd--Early works to 1800.
Princeton subject headings:
Islam--Apologetic works--Early works to 1800.
Islam--Doctrines--Early works to 1800.
Taqlīd--Early works to 1800.