Nelson, K. (2011). The spiritual doorway in the brain: A neurologist's search for the God experience. Dutton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNelson, Kevin. The Spiritual Doorway in the Brain: A Neurologist's Search for the God Experience. New York: Dutton, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNelson, Kevin. The Spiritual Doorway in the Brain: A Neurologist's Search for the God Experience. Dutton, 2011.
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