Ron Rhodes, Harvest House Publishers. The BEST book on JW doctrine and how to respond I have read in the last 30 years. If you can afford only one book, then this is it!
Daune Magnani with Arthur Barrett, Bethany House Publishers. Excellent source of photocopies of JW books and magazines. Can be used with JW's.
New World Bible Translation Committee, Watchtower Bible and Tract Society of New York, Inc. A must have book to be able to show JW how their Bible has been doctored.
Author Unknown, Watchtower Bible and Tract Society of New York, Inc. This book will let you know their so called 'reasoning' regarding doctrines they teach.
Alan W. Gomes, Christian Research Journal Spring 1991. A must read for every Evangelical since it is no longer popular to believe in Hell's existence.
Robert M. Bowman Jr., Christian Research Journal Winter/Spring 1989. Excellent overview of JW's additions, modifications, and deletions to the Bible.
Robert M. Bowman Jr., Baker Book House. Refutes all arguments put forth in JW book: Should you believe in the Trinity?
F. W. Thomas, Baker Book House. Excellent responses to JW's standard answers. Book tends to be unkind towards JW's.