The study Why: 40 Days Pursuing Answers To Life’s Biggest Questions recommends the following books for answering the question, “Why Jesus?”
Christianity and World Religions, by Sir Norman Anderson
Jesus’ Resurrection: Fact or figment?, by Paul Copan and Ronald Tacelli
Jesus The Only Way, Gregory Koukl
Four Views On Salvation In A Pluralistic World, by Dennis Okholm and Timothy Phillips
What Difference Does Jesus Make? Tough Questions, by Garry Poole
The Case For Christ, by Lee Strobel
Jesus Under Fire, by Michael Wilkins and J.P. Moreland
The Challenge of Jesus, by N.T. Wright
The Resurrection and the Son of God, by N.T. Wright
Jesus Among Other Gods, by Ravi Zacharias