Partial List of Catechism/Apologetics Reference Books for Teen Discussions

Beginning Apologetics Series (San Juan Catholic Seminars)
Catholicism and Fundamentalism by Karl Keating
Pastoral and Occasional Sermons by Fr. Ronald Knox
Pope Fiction by Patrick Madrid
Refuting the Attack on Mary by Fr. Mateo
(Catholic Answers) The Catechism of the Catholic Church
The Catholic Church and the Bible by Fr. Peter M.J. Stravinskas
The Fathers of the Church: An Introduction to the First Christian Teachers by Mike Aquilina
The Holy Bible - Douay Rheims Version
The Ignatius Bible
The One-Minute Apologist by Dave Armstrong
Unabridged Christianity: Biblical Answers to Common Questions About the Roman Catholic Faith by Fr. Mario Romero