Bullying is No Laughing Matter - Artists of 36 nationally distributed comic strips unite, encouraging kids to support one another when someone starts bullying.
The Bullied, the Bully, and the Bystander (2009 by Barbara Coloroso). A thorough resource on effective strategies for kids protecting themselves from bullying, and effective intervention and treatment for bullies.
Bullying: A Spiritual Crisis (2003 by Dr. Ronald Kram). Dr. Kram urges readers to stop overlooking the serious problem of bullying and provides resources for reaching out to both victims and bullies.
Stick up for Yourself! (1999 by Gershen Kaufman, Lev Raphael, and Pamela Espeland). This book gives children the tools for positive self-esteem and assertiveness.