| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Grammar and Speaking: Advanced | 978-0-435-25010-2 (0-435-25010-8) | 1997 | Will Forsyth |
| Help with Grammar: Bk. 1 | 978-0-435-28118-2 (0-435-28118-6) | 1993 | " |
| Help with Grammar: Bk. 2 | 978-0-435-28119-9 (0-435-28119-4) | 1993 | " |