APA (7th ed.) Citation

GUILLAUMI, A. (1975). Islam. Penguin book.

Chicago Style (17th ed.) Citation

GUILLAUMI, Alfred. Islam. England: Penguin book, 1975.

MLA (9th ed.) Citation

GUILLAUMI, Alfred. Islam. Penguin book, 1975.

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