"But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear:"  (1 Peter 3:15)

The Answers Book, 4 volumes, edited by Ken Ham
Demolishing Supposed Bible Contradictions, edited by Ken Ham, Bodie Hodge, and Tim Chaffey
Discerning Truth by Jason Lisle
Dragons or Dinosaurs: Creation or Evolution? by Darek Isaacs
Evidence That Demands A Verdict by Josh McDowell
How Do We Know The Bible Is True? edited by Ken Ham and Bodie Hodge
I Don't Have Enough Faith To Be An Atheist by Norman Geisler and Frank Turek
Keeping Faith In An Age of Reason by Jason Lisle
The Kingdom of the Cults by Walter Martin
World Religions in a Nusthell by Ray Comfort
World Religions and Cults edited by Bodie Hodge and Roger Patterson
Understanding the Times by David A. Noebel