Books and Articles

• Enneagram Transformations
  
Releases and Affirmations for Healing your Type
Riso-Hudson
Boston: Houghton Mifflin, 1993

• Personality Types
  
Using the Enneagram for Self-Discovery
Riso-Hudson
Boston: Houghton Mifflin, 1996

• The Wisdon of the Enneagram
  
The Complete Guide to Psychological and Spiritual Growth for the Nine Personality Types
Riso-Hudson
Boston: Bantom Books, 1999

• Discovering Your Personality Type

The Enneagram Questionaire
Riso-Hudson
New York: Houghton Mifflin, 1995

• Understanding the Enneagram
  
The Practical Guide to Personality Type
Riso-Hudson
Boston: Houghton Mifflin, 2000

• Diamond Heart (Books 1-4)
  
A. A. Almass
Berkeley, CA: Diamond Books, 1987 - 1997

• Facets of Unity
  
A. A. Almass
Berkeley, CA: Diamond Books, 1998

• The Spiritual Dimension of the Enneagram
  
Nine Faces of the Soul
Sandra Maitri
New York: Tarcher/Putnam, 2000