The Scarred Soul: Understanding & Ending Self-Inflicted Violence by Tracy Alderman. Terrific workbook, lots of strategies to stop self-injuring
Skin Game by Caroline Kettlewell. A very powerful memoir which I've just started reading
The Luckiest Girl in the World by Steven Levenkron. Fiction about a figure skater who self-injures. If the title seems familiar, it's because Mr. Levenkoron is also the man who wrote Best Little Girl in the World, about anorexia.
Crosses by Shelley Stoer. Fiction about two teens struggling with self-injury
Bodily Harm: The Breakthrough Healing Program for Self-Injurers by Karen Conterio, et al. This is from the S.A.F.E. Alternatives people. They seem to be promoting their own program, for the most part.
Cutting: Understanding and Overcoming Self-Mutilation by Steven Levenkron. Yep, he's at it again.
Understanding Self-Injury: A Workbook for Adults by Kristy Trautmann, Robin Connors
Women Who Hurt Themselves: A Book of Hope and Understanding by Dusty Miller
Healing the Hurt Within: Understand and Relieve the Suffering Behind Self-Destructive Behaviour by Jan Sutton (she's also working on a new book, Because I Hurt)
When the Body Is the Target: Self-Harm, Pain, and Traumatic Attachments by Sharon Klayman Farber
Coping With Self-Mutilation: A Helping Book for Teens Who Hurt Themselves by Alicia Clarke, Carolyn Simpson
Women Living With Self-Injury by Jane Wegscheider Hyman