1. Aquinas, (St.). T. (1991). Summa Theologica: A Concise Translation, Christian Classics: Allen, Texas.
2. Barth, K. (1958). Church Dogmatics, Vol III/1: The Doctrine of Creation, T. & T. Clark: Edinburgh.
3. Barth, K. (1960). Church Dogmatics, Vol III/3: The Doctrine of Creation, T. & T. Clark: Edinburgh.
4. Berry, W. (1991). The Unforeseen Wilderness, North Point Press: San Francisco.
5. Berry, W. (2009). The Gift of Good Land, Counterpoint: Berkeley.