Referenced here is a collection of books, articles and papers that have helped develop the way we think and the offers we make. As you will see, the thinking that has made us effective in producing effective action is built upon the work of many that have gone before us. One way we express our gratitude for the work they have done is to publicly acknowledge their contribution. To those listed here, and many others not listed, we say thank you.

When you find a title that looks valuable and relevant to the issues you are dealing with, don't just check it out from the library. First, you can't write in it and that limits your ability to learn and grow with it. Second, you won't have it around when you need to refer to it. Finally, the author won't eat well, stay warm, and write more valuable books in the future if we don't do more than buy one copy and put it in the library.

We encourage you to show your gratitude to authors whose writing proves valuable by buying their book. In fact, buy two and give one to a friend or mentor who has taught you something. You won't regret it, you will earn the respect of your friend, and the author will appreciate it.