Columbia subject headings:
Harvard subject headings:
Islam--Essence, genius, nature
Qurʼan--Appreciation.
Qurʼan--Criticism, interpretation, etc.
Qurʼan--Evidences, authority, etc.
Princeton subject headings:
Islam--Essence, genius, nature.
Qurʼan--Appreciation.
Qurʼan--Criticism, interpretation, etc.
Qurʼan--Evidence, authority, etc.b.