APA (7th ed.) Citation

Guillaume, A. (1971). Islam (Repr.). Penguin Books.

Chicago Style (17th ed.) Citation

Guillaume, Alfred. Islam. Repr. Harmondsworth: Penguin Books, 1971.

MLA (9th ed.) Citation

Guillaume, Alfred. Islam. Repr. Penguin Books, 1971.

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