| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Trio: 1: Teacher's Book | 978-0-435-28136-6 | 1987 | Liz Driscoll · Paul Radley |
| Trio: 2: Teacher's Book | 978-0-435-28137-3 | 1987 | Liz Driscoll · Paul Radley |
| Trio: 3: Teacher's Book | 978-0-435-28138-0 | 1987 | Liz Driscoll · Paul Radley |
| Trio: Bk. 1 | 978-0-435-28120-5 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Bk. 2 | 978-0-435-28124-3 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Bk. 3 | 978-0-435-28128-1 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Cassettes Bk. 1 | 978-0-435-28123-6 | 1987 | Liz Driscoll · etc. · Paul Radley |
| Trio: Cassettes Bk. 2 | 978-0-435-28127-4 | 1987 | Liz Driscoll · etc. · Paul Radley |
| Trio: Cassettes Bk. 3 | 978-0-435-28131-1 | 1987 | Liz Driscoll · etc. · Paul Radley |
| Trio Plus: Cassettes | 978-0-435-28135-9 | 1992 | Liz Driscoll · Paul Radley |
| Trio Plus: Practice Book | 978-0-435-28133-5 | 1992 | Liz Driscoll · Paul Radley |
| Trio Plus: Students' Book | 978-0-435-28132-8 | 1992 | Liz Driscoll · Paul Radley |
| Trio Plus: Tchrs' | 978-0-435-28134-2 | 1988 | Liz Driscoll · Paul Radley |
| Trio: Practice Bk Bk.1 | 978-0-435-28121-2 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Practice Bk Bk. 2 | 978-0-435-28125-0 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Practice Bk Bk. 3 | 978-0-435-28129-8 | 1987 | Paul Radley · Liz Driscoll |
| Trio: Tchrs' Bk. 1 | 978-0-435-28122-9 | 1987 | Liz Driscoll · Paul Radley |
| Trio: Tchrs' Bk. 2 | 978-0-435-28126-7 | 1987 | Liz Driscoll · Paul Radley |
| Trio: Tchrs' Bk. 3 | 978-0-435-28130-4 | 1987 | Liz Driscoll · Paul Radley |