* The Wildflowers (1979)
* The Moonbeamers (1981)
* The Stargazers (1983)
* The Dreamweavers (1985)
* The Suncatchers (1987)
* The Earthkeepers (1989)
* The Skydancers (1991)
* The Windwalkers (1993)
* The Firestarters (1995)
* The Waterbearers (1997)
Μη μυθοπλασία
* The Enneagram:A Guide to Self-Discovery (1992)
* The Enneagram Workbook (1994)
* The Enneagram in Love and Work (1997)
* The Enneagram Personality Types:A Guide for Working Together (2000)
* The Enneagram:A User's Guide (2002)
* The Enneagram:A Path to Self-Understanding (2005)
* The Enneagram:A Guide to Your Personality and Spiritual Growth (2008)
* The Enneagram:A User's Guide (2011)
* The Enneagram:A Guide to Self-Discovery (2014)
Παιδικά βιβλία
* Το μικρό λουλούδι που δεν θα εγκατέλειπε (1984)
* The Little Tree That Couldn't Stand Still (1986)
* The Little Bird That Wouldn't Fly (1988)
* The Little Fish That Wouldn't Swim (1990)
* The Little Star That Wouldn't Shine (1992)
* Ο μικρός πλανήτης που δεν μπορούσε να βρει τον δρόμο του (1994)
* The Little Sun That Wouldn't Rise (1996)
* The Little Moon That Wouldn't Set (1998)
* The Little Wind That Wouldn't Blow (2000)
* The Little Fire That Wouldn't Burn (2002)