APA (7th ed.) Citation

Watt, W. M. (1990). What is Islam? (2nd ed.). Librairie du Liban.

Chicago Style (17th ed.) Citation

Watt, W. Montgomery. What Is Islam? 2nd ed. Beirut: Librairie du Liban, 1990.

MLA (9th ed.) Citation

Watt, W. Montgomery. What Is Islam? 2nd ed. Librairie du Liban, 1990.

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