From the Lips of Children, by Richard Wurmbrand, is a 106 page illustrated book sharing children's views of God and the lessons we can learn from them.
Into the Den of Infidels: Our Search for the Truth
The Witnesses Trilogy: To Every Nation
Practice and Doctrines of Evangelical Churches
The Answer to the Atheist's Handbook
The Gospel Collection: The Gospel of Matthew
The Gospel Collection: The Gospel of Mark