The Enneagram: Understanding Yourself and the Others in Your Life [Paperback]

Fixation to Freedom: The Enneagram of Liberation

My Best Self: Using the Enneagram to Free the Soul

Personality Types: Using the Enneagram for Self-Discovery

The Sacred Enneagram Workbook: Mapping Your Unique Path to Spiritual Growth

The Positive Enneagram: A New Approach to the Nine Personality Types

The Art of the Enneagram: 9 Paths to Awareness, Acceptance and Transformation

The Enneagram of G. I. Gurdjieff: Mathematics, Metaphysics, Music, and Meaning