RESOURCES | The Enneagram Online

Books by Riso and 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)

Books by Palmer and Daniels (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: enneagram.com (Helen Palmer's website)

Website: drdaviddaniels.com (Dr. David Daniel's website)

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

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)

Books by Beatrice Chestnut, Ph.D.

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)

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)

Website: diamondapproach.org (A.H. Almass)

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)

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)