I've recently been doing a bit of study & research on the topic of church discipline. As I've been locating resources, I've compiled a list of both books and online documents.
Click here to view the list of Church Discipline Resources.
As with any resource, please read with discernment. I haven't read every page of every resource listed here, but can generally recommend these to you. In the event you read something that doesn't sound biblical, use it to drive you back to the text of Scripture to find out why.
And for those who are not familiar with the biblical practice of church discipline, you might start with Matthew 18:15 - 20. And while you're there, pay attention to the context - i.e., notice the parables on each side of this passage on discipline. I think you'll be encouraged and come away with a more accurate understanding of this tough but loving passage.