| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Psychology of the Language Learner: Individual Differeces in Second Language Acquisition | 978-0-8058-6018-4 (0-8058-6018-5) | 2005 |
| Questionnaires in Second Language Research: Construction, Administration, and Processing | 978-0-8058-3909-8 (0-8058-3909-7) | 2003 |
| The Psychology of the Language Learner: Individual Differences in Second Language Acquisition | 978-0-8058-4729-1 (0-8058-4729-4) | 2005 |