In Sheep's Clothing: Understanding and Dealing with Manipulative People This is a practical guide to identifying manipulators and their tactics and suggestions on dealing with them. A must-have if you are coping with a narcissist.
Without Conscience: The Disturbing World of the Psychopaths Among Us Dr. Hare is the leading expert on psychopathy. Many of his observations apply to NPD.
The Wizard of Oz and Other Narcissists: Coping with the One-Way Relationship in Work, Love, and Family A good primer on NPD especially if the concept is new to you.
Inside the Criminal Mind: Revised and Updated Edition The malignant narcissist thinks like a criminal even if he has managed to not get arrested.
Emotional Vampires: Dealing With People Who Drain You Dry Lots of pithy wisdom with some humor added. Think of it as comic relief since NPDs aren't usually something to laugh about. Applies best to the workplace NPD
Snakes in Suits: When Psychopaths Go to Work
Subtle Power of Spiritual Abuse, The: Recognizing and Escaping Spiritual Manipulation and False Spiritual Authority Within the Church Excellent book for any Christian, or former Christian, coping with spiritual abuse. Highly recommended.
Before It's Too Late: Why Some Kids Get Into Trouble--and What Parents Can Do About It Worried about signs of antisocial behavior in your child? What to do? Start with this book.
Stiff: The Curious Lives of Human Cadavers Now for something completely different. Humorous, yet tasteful. Interesting historical info. If you are curious and not faint of heart you'll love this book!