APA (7th ed.) Citation
Keller, T. (2008). The reason for God: Belief in an age of skepticism. Riverhead Books.
Chicago Style (17th ed.) Citation
Keller, Timothy. The Reason for God: Belief in an Age of Skepticism. New York: Riverhead Books, 2008.
MLA (9th ed.) Citation
Keller, Timothy. The Reason for God: Belief in an Age of Skepticism. Riverhead Books, 2008.
Warning: These citations may not always be 100% accurate.