Columbia subject headings:
Christianity and other religions--Islam.
Christianity--Controversial literature--History and criticism.
Islam--Controversial literature--History and criticism.
Islam--Relations--Christianity.
Harvard subject headings:
Christianity and other religions--Islam
Christianity--Controversial literature--History and criticism
Islam--Controversial literature--History and criticism.
Islam--Relations--Christianity
Princeton subject headings:
Christianity and other religions--Islam.
Islam--Relations--Christianity.