Flew, Anthony, 1979, “A Dictionary of Philosophy,” New York: St. Martin’s Press, 1979.
Forman, Robert K. C. Ed. “The Innate Capacity.” New York: Oxford University Press, 1998.
---. “Mysticism, Mind, Consciousness.” Albany: State University of New York Press, 1999.
---. “Of Deserts and Doors: Methodology of the Study of Mysticism.” Sophia. Vol. 32, No.1. (1993): pp. 31-44.
---. “Paramaartha and the Modern Constructivists on Mysticism: Epistemological Monomorphism versus Duomorphism.” Philosophy East and West. Vol. 39, No. 4 (1989): pp. 393-418.
---. Ed. “The Problem of Pure Consciousness.” New York: Oxford University Press, 1990.
Gellman, Jerome I. “Mysticism.” Stanford Encyclopedia of Philosophy. (2004): Web. 11 November 2004.
---. “Mysticism and Religious Experience.” Oxford Handbook of Philosophy of Religion. Ed.
Wainwright, William J. New York: Oxford University Press, 2005. 138-167.
Guenon, Rene. “The Metaphysical Principles of the Infinitesimal Calculus.” New York: Sophia Perennis, 2003.
Horowitz, Maryanne Cline. Ed. “New Dictionary of the History of Ideas.” New York: Charles Scribner’s Sons, 2005.
Huxley, Aldous. “The Perennial Philosophy: An Interpretation of the Great Mystics, East and West.” New York: HarperCollins, 1944.
Jackson, Roger R. “Matching Concepts: Deconstructive and Foundationalist Tendencies in Buddhist Thought.” Journal of the American Academy of Religion. Vol. 57, No. 3. (1989): pp. 561-589.
Katz, Stephen T. Ed. “Mysticism and Language.” New York: Oxford University Press, 1992.
---. Ed. “Mysticism and Philosophical Analysis.” New York: Oxford University Press, 1978.
---. Ed. “Mysticism and Religious Traditions.” New York: Oxford University Press, 1983.
Kimmel, Monica. Interpreting Mysticism. “An Evaluation of Stephen T. Katz’s Arguments Against a Common Core in Mysticism and Mystical Experience.” Ph.D. Dissertation. University of Gothenburg, 2008.
Mahoney, Timothy A. “Contextualism, Decontextualism, and Perennialism: Suggestions for Expanding the Common Ground of the World’s Mystical Traditions.” Twentieth World Congress on Philosophy. Boston, Massachusetts. 10-15 August 1998. Paiedia Project On-Line, n.d., Web.
Merrell-Wolff, Franklin. “Pathways Through to Space.” New York: The Julian Press, Inc., 1973.
---. “The Philosophy of Consciousness Without an Object.” New York: The Julian Press, Inc., 1973.
Peirce, C. S. The Architecture of Theories. Buchler, Justus (Ed.), “Philosophical Writings of Peirce.” New York: Dover Publications, Inc., 1955.
Schopenhauer, Arthur. “The World as Will and Representation.” New York: Dover, 1966.
Smart, Ninian. “Understanding Mystical Experience,” pp. 12, in Katz (ed.), Mysticism and Philosophical Analysis, 1978.
Spencer-Brown, George. “Laws of Form.” Germany: Bohmeier Verlag, 2008.
Steuchius, Augustinus, De philosophia perenni sive veterum philosophorum cum theologia Christiana consensus libri X, 1540.
Stoeber, Michael. “Theo-Monistic Mysticism.” New York: St. Martin’s Press, 1994. Print.
---. “Constructivist Epistemologie; Mysticism: A Critique and a Revision” Religious Studies. Vol. 28 (2001): pp. 107-116.
Thackara, W. T. S. “The Perennial Philosophy.” Sunrise Magazine, April/ May 1984. Web. 05 October 2009.
Whitehead, A. N., “Process and Reality.” London: McMillan, 1929. Corrected Edition. New York: The Free Press, 1978.