Book Recommendations on Homeless Ministering

I have two books in particular, that I will be using as a framework for ministering to the homeless and suffering. One is 'When Helping Hurts' by Steve Corbett and the other is 'When God Weeps' by Joni Eareckson Tada. I am reading through both of them and they are excellent. Both are based upon Scriptural principles. We have to have a Biblical mindset when ministering to people who are homeless. I have a lot of questions I want to ask, and perhaps they will be answered as I read these books. There is a third book I just received called, 'Not a One Night Stand' which talks about homeless people and how to minister to them. I will give updates as I read it.