Columbia subject headings:
Christianity and other religions--Islam.
Daʻwah (Islam)
Islam--Apologetic works.
Islam--Relations--Christianity.
Muslims--Non-Islamic countries.
Harvard subject headings:
Christianity and other religions--Islam
Daʻwah (Islam)
Islam--Apologetic works
Islam--Relations--Christianity
Muslims--Non-Islamic countries
Muslims--Non-Islamic countries.
Princeton subject headings:
East and West.
Islam--20th century.
Muslims--Non-Islamic countries.
Religious life--Islam.