| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1984 | 978-0-9606954-0-9 | David Keirsey · Marilyn Bates | Please Understand Me: Character and Temperament Types |
| 1988 | 978-0-9606954-1-6 | David Keirsey | Portraits of Temperament |
| 1989 | 978-0-9606954-2-3 | Stephen Montgomery | The Pygmalion Project, Vol. I: The Artisans (Love & Coercion Among the Types) |
| 1990 | 978-0-9606954-3-0 | David Keirsey · Marilyn Bates | Por favor, compréndeme: tipos de carácter y temperamento |
| '' | 978-0-9606954-4-7 | '' | Versteh Mich Bitte: Charakter-Und Temperament-Typen (German Edition) |
| '' | 978-0-9606954-5-4 | Stephen E. Montgomery | Pygmalion Project: Love & Coercion Among the Types, Vol. 2: The Guardian |
| 1992 | 978-0-9606954-6-1 | Ray Choiniere · David W Keirsey | Presidential Temperament: The Unfolding of Character in the Forty Presidents of the United States/With Supplement |
| 1993 | 978-0-9606954-9-2 | Stephen E. Montgomery | The Pygmalion Project (Vol. III: The Idealist) (Love & Coercion Among the Types) |