The following books are recommended in , a small group curriculum published by Willow Creek Resources.
I’m Glad You Asked, by Ken Boa and Larry Moody
Letters From a Skeptic, by Gregory Boyd and Edward Boyd
Reasonable Faith, by William Lane Craig
Why Believe?, by C. Stephen Evans
Give Me an Answer, by Cliffe Knechtle
Finding Faith, by Andrew Knowles
Handbook of Christian Apologetics, Peter Kreeft and Ronald Tacelli
Mere Christianity, by C.S. Lewis
Miracles, by C.S. Lewis
Know What You Believe, by Paul Little
Know Why You Believe, by Paul Little
Scaling The Secular City, by J. P. Moreland
Reason to Believe, by R. C. Sproul
The Case for Christ, by Lee Strobel
The Case for Faith, by Lee Strobel