- A Workbook Companion, Vol. II: Commentaries on the Workbook for Students from A Course in Miracles, Lessons 181-365
- Bringing the Course to Life: How to Unlock the Meaning of A Course in Miracles for Yourself (Course in Miracles)
- Seeing the Bible Differently: How A Course in Miracles Views the Bible (Course in Miracles)
- A Workbook Companion, Vol. I: Commentaries on the Workbook for Students from a Course in Miracles
- One Course, Two Visions: A Comparison of the Teachings of the Circle of Atonement and Ken Wapnick on 'A Course In Miracles'