Discovering Your Personality Type

The Essential Introduction to the Enneagram, Revised and Expanded

1992

Enneagram Transformations

Releases and Affirmations for Healing Your Personality Type

1993

La sabiduría del Eneagrama

Guía completa para el desarrollo psicológico y espiritual de los Nueve Tipos de Personalidad

2017

La sabiduría del eneagrama

2001

Personality Types

Using the Enneagram for Self-Discovery

1987

The Reformer

The Power of The Enneagram Individual Type Audio Recording

2004

The Riso-Hudson Enneagram Type Indicator

2000

The Wisdom of the Enneagram

The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types

1999

Understanding the Enneagram

The Practical Guide to Personality Types

1990