APA (7th ed.) Citation

Gibb, H. A. R. (1978). Modern trends in Islam. Octagon Books.

Chicago Style (17th ed.) Citation

Gibb, H. A. R. Modern Trends in Islam. New York: Octagon Books, 1978.

MLA (9th ed.) Citation

Gibb, H. A. R. Modern Trends in Islam. Octagon Books, 1978.

Warning: These citations may not always be 100% accurate.