• Phillips, Nate. Do Something Else. Oregon: Cascade Books, 2016.

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• Nouwen, Henri J.M. In the Name of Jesus: Reflections on Christian Leadership. New York: A Crossroad Book, 1989.

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• Grant, Adam. Give & Take: Why Helping Others Drives Our Success. New York: Penguin Books, 2014.

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• Lawerence, Brother and Laubach, Frank. Practicing His Presence. ​​Florida: The SeedSower, 1973.

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