| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| The Interpretation of Language | 978-0-87668-086-5 (0-87668-086-4) | 1973 |
| Understanding the Symbolic Meaning of Language | 978-0-87668-087-2 (0-87668-087-2) | 1973 |
| Understanding the unconscious meaning of language | 978-0-87668-713-0 (0-87668-713-3) | 1983 |