Try the following:
Deikman, A.: Personal Freedom: On Finding Your Way to the Real World, New York: Bantam, 1976.
Deikman, A.: The Observing Self: Mysticism and Psychotherapy, Boston: Beacon Press, 1982.
Deikman, A.: The Wrong Way Home: Uncovering the Patterns of Cult Behavior in American Society, Boston: Beacon Press, 1990.
Deikman, A.: Meditations on a Blue Vase (Collected Papers), Napa CA: Fearless Books, 2014.
Deikman, A.: Them and Us: Cult Thinking and the Terrorist Threat, Berkeley CA: Bay Tree, 2003.
Galanter, M.: Cults: Faith, Healing and Coercion, New York: Guilford Press, 1989.
Kramer, J.: The Passionate Mind: A Manual for Living Creatively with Oneās Self, Berkeley: North Atlantic Books, 1974.
Kramer, J.; Alstad, D.: The Guru Papers: Masks of Authoritarian Power, Berkeley, CA: Frog, Ltd., 1993.
Kramer, J.; Alstad, D.: The Passionate Mind Revisited: Expanding Personal and Social Awareness, Berkeley: North Atlantic Books, 2009.
Krishnamurti, J.: Education and the Significance of Life, San Francisco: HarperSanFrancisco, (1953) 1975.
Krishnamurti, J.; Luytens, M.: The Krishnamurti Reader, New York: Penguin Arcana, (1954, 1963, 1964) 1970.
Krishnamurti, J.; Huxley, A.: The First & Last Freedom, San Francisco: HarperSanFrancisco, (1954) 1975.
Krishnamurti, J.: As One Is: To Free the Mind from All Conditioning, Prescott AZ: Hohm Press, (1955) 2007.
Krishnamurti, J.; Rajagopal, D.: Commentaries on Life, 1st Series, Wheaton IL: Theosophical Publishing, (1956) 1973.
Krishnamurti, J.: Rajagopal, D.: Commentaries on Life, 2nd Series, Wheaton IL: Theosophical Publishing, (1956) 1976.
Krishnamurti, J.: Rajagopal, D.: Commentaries on Life, 3rd Series, Wheaton IL: Theosophical Publishing, (1956) 1967.
Langone, M., ed.: Recovery from Cults: Help for Victims of Psychological and Spiritual Abuse, New York: W. W. Norton, 1993.
Singer, M. T.: Cults in Our Midst, San Francisco: Jossey-Bass, 1995.
Tart, C. (ed.): Transpersonal Psychologies: Perspectives on the Mind from Seven Great Spiritual Traditions, San Francisco: Harper-Collins, 1975, 1992.
Tart, C.: Waking Up: Overcoming the Obstacles to Human Potential, New York: New Science Library, 1987.
Tart, C.: Living the Mindful Life: a handbook for living in the present moment, Boston: Shambala, 1994.
Watts, A.: The Wisdom of Insecurity: A Message for the Age of Anxiety, New York: Random House, 1951.
Watts, A.: Nature, Man and Woman, New York: Random House, 1958.
Watts, A.: The Book: On the Taboo of Knowing Who You Are, New York: Random House, 1966.
Watts, A.: In My Own Way, New York: Pantheon, 1972.
Because a lot of this stuff is either what the human potential movement of the 1960s and '70s either came from or is adequately explained by. (I was myself a participantā¦ as well as a recovering participant and professionally trained deprogramming facilitator for those who went over the edge with the stuff.)