Schwartz, Richard C. New York, NY: The Guilford Internal Family Systems Theory. Press, 1998. Shuster, Marguerite. "The Mystery of Original Sin." (2013, April 1): Christianity Today. 39-41. Walton, John H. Grand Rapids, MI: The NIV Application Commentary Genesis. Zondervan, 2001.
Schwartz, Richard C. Internal Family Systems Theory. New York, NY: The Guilford Press, 1998. Shuster, Marguerite. "The Mystery of Original Sin." Christianity Today. (2013, April 1): 39-41. Walton, John H. The NIV Application Commentary Genesis. Grand Rapids, MI: Zondervan, 2001.