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2. Croce, Paul Jerome. 1995. Science and Religion in the Era of William James. Chapel Hill: University of North Carolina Press.
3. Dickason, C. Fred. 1987. Demon Possession and the Christian: A New Perspective. Westchester, IL: Good News Publishers.
4. Emerson, Ralph Waldo. 1877. “Demonology”. The North American Review (Vol. 124:255). University of Northern Iowa.
5. Feinstein, Howard. 1999. Becoming William James. Ithaca: Cornell University Press.