Books by Helen Palmer, David Daniels, M.D., and Peter O'Hanrahan (The Narrative Enneagram):

• The Enneagram: Understanding Yourself and the Others in Your Life, by Helen Palmer (1991)

• The Enneagram in Love & Work: Understanding Your Intimate & Business Relationships, by Helen Palmer (1995)

• The Essential Enneagram: The Definitive Personality Test and Self-Discovery Guide, by David Daniels, M.D. and Virginia Price, Ph.D. (2009)

• The Enneagram, Relationships and Intimacy: Understanding One Another Leads to Loving Better and Living More Fully, by David Daniels, M.D. and  Suzanne Dion (2018)

Website: narrativeenneagram.org

Website: helenpalmer.com (Helen Palmer's website)

Website: drdaviddaniels.com (Dr. David Daniels' website)

Website: theenneagramatwork.com (Peter O'Hanrahan's website)

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Books by Don Richard Riso and Russ Hudson (The Enneagram Institute):

• 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, by Don Richard Riso with Russ Hudson (1996)

• Understanding the Enneagram: The Practical Guide to Personality Types, Revised Edition, by Don Richard Riso and Russ Husdon (2000)

• Enneagram Transformations: Releases and Affirmations for Healing Your Personality Type, by Don Richard Riso (1993)  

Website: enneagraminstitute.com

Website: russhudson.com

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Books from the Diamond Approach® perspective:

• 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)

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

• Keys to the Enneagram: How to Unlock the Highest Potential of Every Personality Type, by A.H. Almaas (2021)

Website: sandramaitri.com (Sandra Maitri's website)

Website: diamondapproach.org (A.H. Almaas's website)

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Books by Ginger Lapid-Bogda, Ph.D.  (The Enneagram in Business):

(Excellent for organizational applications)

• The Art of Typing: Powerful Tools for Enneagram Typing, by Ginger Lapid-Bogda, Ph.D. (2018)

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

• What Type of Leader are You: Using the Enneagram to Identify and Grow Your Leadership Strengths and Achieve Maximum Success, by Ginger Lapid-Bogda, PhD. (2007)

Website: theenneagraminbusiness.com

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Books by Beatrice Chestnut, Ph.D. (The Chestnut Paes Enneagram Academy):

• The Enneagram Guide to Waking Up: Find Your Path, Face Your Shadow, Discover Your True Self, by Beatrice Chestnut, Ph.D., Uranio Paes, et al (2021)

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

• The 9 Types of Leadership: Mastering the Art of People in the 21st Century Workplace, by Beatrice Chestnut, Ph.D. (2017)

Website: cpenneagram.com

 

​Books by Susan Rhodes:

• Archetypes of the Enneagram: Exploring the Life Themes of the 27 Enneagram Subtypes from the Perspective of Soul, by Susan Rhodes (2010)

• The Integral Enneagram: A Dharma-Oriented Approach for Linking the Nine Personality Types, Nine Stages of Transformation & Ken Wilber's Integral Operating System, by Susan Rhodes (2013)

• The Positive Enneagram: A New Approach to the Nine Personality Types, by Susan Rhodes (2009)

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Books by Janet Levine:

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

• Know Your Parenting Personality: How To Use The Enneagram To Be The Best Parent You Can Be, by Janet Levine (2003)

Website: janetlevine.com

 

Books by Thomas Condon:

• The Enneagram Movie and Video Guide: How to See Personality Styles in the Movies, by Thomas Condon, 3.0 (2011)

• The Dynamic Enneagram: How To Work With Your Personality Style To Truly Change and Grow, by Thomas Condon (ebook)

Website: thechangeworks.com

  

Books by Michael J. Goldberg:

• Travels With Odysseus: Uncommon Wisdom From Homer’s Odyssey, by Michael Goldberg (2006)

• The 9 Ways Of Working: How To Use The Enneagram To Discover Your Natural Strengths and Work More Effectively, by Michael Goldberg (1999)

  

Books by Claudio Naranjo:

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

• Transformation Through Insight: Enneatypes In Life, Literature And Clinical Practice, by Claudio Naranjo, M.D. (1997)

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

• Enneatypes in Psychotherapy, by Claudio Naranjo, M.D. (1993)

Website: claudionaranjo.net

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Books by Other Authors:

• Personality and Wholeness in Therapy: Integrating 9 Patterns of Developmental Pathways in Clinical Practice, by Daniel J. Siegel, M.D. (2024)

• The Enneagram Symbol: Mapping the Journey of Personal, Social, and Spiritual Evolution, by Jennifer Joss, PhD (2023)

• Taming Your Money Mon$ter: Nine Paths to Money Mastery with the Enneagram, by Doug Lynam (2025)

• Reclaiming You: Using the Enneagram to Move from Trauma to Resilience, by Sharon K. Ball and Renee Siegel (2023)

• The Buddhist Enneagram: Nine Paths to Warriorship, by Susan Piver (2022)

• The Neuroscience Behind the Enneagram, by Adelaida Harrison (2019)

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

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

• Where on Earth Did the Enneagram Come From?, by Fatima Fernandez Christlieb (2016)

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

• Enneagram Applications: Personality Styles in Business, Therapy, Medicine, Spirituality and Daily Life, edited by Clarence Thomson and Thomas Condon (2001)

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

• Enneagram Studies, by John G. Bennett (1974)

• In Search of the Miraculous: The Teachings of G.I. Gurdjieff , by P.D. Ouspensky (2001, 1949)

• The Fourth Way, by P.D. Ouspensky (2018, 1971)

• The Enneagram: Symbol of All and Everything, by Nathan Bernier (2003)