| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Personality and Human Relations | 978-0-07-056358-2 (0-07-056358-6) | 1961 |
| Personality and Human Relations: Instructor's | 978-0-07-056359-9 (0-07-056359-4) | 1961 |
A. Rigopoulos F. Sferra · A. S. · ADAM SFERRA · Adriana S. Sferra · Antonio Sferra