He has recently published,

Breaking The Mirror - Overcoming Narcissism : How to Overcome Self-Centeredness and Achieve Successful Relationships

A self-help book for people with narcissistic personality traits.
It includes a section for spouses and partners of people with narcissistic personalities to help them be more effective in dealing with the challenges of being in such a relationship.
He is now working on his second book,

CQ:The Changeability Quotient

Which focuses on assessing and improving one’s ability to change.
This is a fundamental requirement which is vital to achieve a successful outcome in therapy.
Click On Image to Enlarge
Click To Enlarge
Click To Enlarge