The following is a list, in no particular order, of 12 helpful books that discuss church discipline or elements of it. This list is for layperson and minister alike, with some focusing primarily on the theoretical/biblical study of the issue, while others focus primarily on the practical, and some include a helpful dose of both.
If you can only read one of these books, read Ken Sande’s “The Peacemaker.” If you can read two of them, add Jonathan Leeman’s “Church Discipline” (it’s very short; it’s more of a handbook). If you can read more than that, but don’t know where to go next, hit me up in the comments and we can talk about which one might be best for you and your needs.
Several of these are available in Spanish, as well.