| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| 501 Portuguese Verbs | 978-0-7641-2916-2 (0-7641-2916-3) | 2005 | Michael J. Ferreira |
| 501 Portuguese Verbs: Fully Conjugated in All the Tenses in a New Easy-To-Learn Format Alphabetically Arranged | 978-0-8120-9034-5 (0-8120-9034-9) | 1995 | " |