| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Character Code | 978-1-880674-01-7 | 1991 | |
| Color Code | 978-1-880674-00-0 | 1987 | |
| Color Your Future: Using the Character Code to Enhance Your Life | 978-0-684-86571-3 | 2000 | |
| Color Your Future: Using the Color Code to Strenghthen Your Character | 978-0-684-84377-3 | 1999 | |
| Deine Lebensfarbe, der Schlüssel zum Erfolg | 978-3-7787-9011-3 | 1998 | |
| The Color Code: A New Way to See Yourself, Your Relationships, and Life | 978-0-684-84822-8 | 1999 | |
| The COLOR CODE: A NEW WAY TO SEE YOURSELF, YOUR RELATIONSHIPS, AND LIFE | 978-0-684-84376-6 | 1998 |
Dr. Taylor Hartman · Ph.D. Taylor Hartman · T.H. · T. Hartman · Taylor Hartman Ph.D. · Taylor Ph.D. Hartman