| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| A Circle Is Not a Valentine | 978-0-19-540744-0 | 1991 | |
| Circle Is Not a Valentine | 978-0-19-540928-4 | 1990 | Heinz Werner Zimmermann · Fitzhh Werner Zimmermann |
| Finster Frets: Book and Cassette | 978-0-19-541055-6 | 1995 | Kent Baker · K. Baker |
| The Colour of Spring | 978-0-19-540743-3 | 1991 | |
| Twelve Months Make a Year | 978-0-19-540798-3 | 1990 | |
| Zero Is Not Enough | 978-0-19-540797-6 | 1990 | |
H.W. · H. Werner · H., ZIMMERMANN · Heinz Werner Zimmermann · W. Zimmermann · Werner Zimmermann