I've read "Cut" which is a good book if you are looking for story. Ive also read The Luckiest Girl in the World by Steven Levenkron. If you are looking for imformation/guide, etc, I'd suggest Bodily Harm by the cofounders of SAFE and The Scarred Soul by Tracy Alderman
Also here is a link of one threads about SI books:
http://www.recoveryourlife.com/forum...light=si+books