APA (7th ed.) Citation

Spencer, R. (2006). The truth about Muhammad: Founder of the world's most intolerant religion. Regnery Pub..

Chicago Style (17th ed.) Citation

Spencer, Robert. The Truth About Muhammad: Founder of the World's Most Intolerant Religion. Washington, DC: Regnery Pub., 2006.

MLA (9th ed.) Citation

Spencer, Robert. The Truth About Muhammad: Founder of the World's Most Intolerant Religion. Regnery Pub., 2006.