For more information on the history, psychology, spiritual understandings and practical applications of the Enneagram, as well as online typing tests and video interviews, please go to one or more of these recommended links:

What follows is a partial list, in no particular order, of personally recommended books. In addition, the interested student might want to take a look at back issues of The Enneagram Monthly and The Enneagram Journal. Below I list only resources having to do with the Enneagram, but the reader might also want to find and study other esoteric and mystical teachings, such as those on the Egyptian and Greco-Roman Mysteries, Pythagoreanism, Platonism, and Neo-Platonism, Kabbalah and Christian Mysticism, Western Esotericism, including Theosophical texts by H.P. Blavatasky, Rudolf Steiner, Alice A. Bailey and Helena Roerich, and the highly relevant teachings of G.I. Gurdieff, P.D. Ouspensky, and others involved in the 4th Way Tradition.

  • The Essential Enneagram: The Definitive Personality Test and Self-Discovery Guide, by David Daniels, M.D. and Virginia Price, Ph.D. (2000).

  • The Enneagram in Love and Work: Understanding your Intimate and Business Relationships, by Helen Palmer (1995).

  • The Enneagram: Understanding Yourself and the Others in Your Life, by Helen Palmer (1988).

  • The Wisdom of the Enneagram: The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types, by Don Richard Riso and Russ Hudson (1999).

  • Personality Types: Using the Enneagram for Self-discovery (2nd Edition), by Don Richard Riso (1996).

  • The Enneagram Field Guide: Notes on Using the Enneagram in Counseling, Therapy and Personal Growth, by Carolyn Bartlett, LCSW (2003). Available online.

  • The Sacred Enneagram: Finding Your Unique Path to Spiritual Growth, by Christopher L. Heurtz (2017).

  • Character and Neurosis: An Integrative View, by Claudio Naranjo, M.D. (1994).

  • Enneatype Structures: Self-Analysis for the Seeker, by Claudio Naranjo, M.D. (1994).

  • The Enneagram of Society: Healing the Soul to Heal the World, by Claudio Naranjo, M.D. (1995).

  • The Enneagram Intelligences: Understanding Personality for Effective Teaching and Learning, by Janet Levine (1999).

  • The Spiritual Dimension of the Enneagram: Nine Faces of the Soul, by Sandra Maitri (2000).

  • The Enneagram of Passions and Virtues: Finding the Way Home, by Sandra Maitri (2005).

  • Bringing out the Best in Yourself at Work: How to Use the Enneagram System for Success, by Ginger Lapid-Bogda (2004).

  • Facets of Unity: The Enneagram of Holy Ideas, by A. H. Almas (2000).

  • Travels with Odysseus: Uncommon Wisdom From Homer’s Odyssey, by Michael J. Goldberg (2005).

  • The Complete Enneagram: 27 Paths to Greater Self-Knowledge, by Beatrice Chestnut (2013). 

  • The Intelligent Enneagram, by A.G.E. Blake (1996).

  • The Literary Enneagram: Characters from the Inside Out, by Judith Searle (2001).

  • The Enneagram Movie and Video Guide: How to see Personality Styles in the Movies, Second Edition, by Tom Condon (1999).

  • The Enneagram and Kabbalah: Reading Your Soul, 2nd Edition, by Rabbi Howard A. Addison (2006).

  • Archetypes of the Enneagram: Exploring the life themes of the 27 subtypes from the perspective of soul, by Susan Rhodes (2010).

  • In Search of the Miraculous: Fragments of an Unknown Teaching, by P.D. Ouspensky (1949).