Columbia subject headings:
Motazilites--Doctrines--Early works to 1800.
Qurʼan--Evidences, authority, etc.--Early works to 1800.
Harvard subject headings:
Islam--Doctrines--Early works to 1800.
Qurʼan--Evidences, authority, etc.--Early works to 1800.
Princeton subject headings:
Motazilites--Doctrines--Early works to 1800.
Qurʼan--Evidences, authority, etc.--Early works to 1800.