This is a short list of the many, many books that are available regarding bullying. These websites provide books for elementary through middle school aged children.
http://pbskids.org/itsmylife/friends/bullies/print_books.html
* A list of fiction and nonfiction books about bullying.
http://childrensbooks.about.com/od/productreviews/fr/The-Skinny-On-Bullying-book-review.htm
* This book is for both the bully and the bullied; told in comic book style.
http://childrensbooks.about.com/od/productreviews/fr/The-Bully-Blockers-Club.htm
* This is a picture book about bullying.
http://www.readwritethink.org/parent-afterschool-resources/podcast-episodes/books-about-bullying-30778.html?main-tab=1#tabs
* From the International Reading Association and readwritethink.org: a podcast discussion about bullying, and a list of books that explore the problem of bullying.