| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Travessia: A Portuguese Language Textbook, No 1 | 978-0-87840-230-4 (0-87840-230-6) | 1989 | |
| Travessia Manual De Laboratorio | 978-1-58901-188-5 (1-58901-188-0) | 2007 | Ricardo M. Paiva |
| Travessia Textbooks 1 And 2 | 978-1-58901-189-2 (1-58901-189-9) | 2007 | Ricardo M. Paiva · John B. Jensen · Nivea Parsons |