| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Dolphin Readers: Level 2: Double Trouble & Super Sam Audio CD | 978-0-19-440209-5 | 2005 | |
| Oxford Phonics World: Level 1: Teacher's Book | 978-0-19-459628-2 | 2012 | Kaj Schwermer · Julia Chang |
| Oxford Phonics World: Level 1: Workbook | 978-0-19-459622-0 | 2012 | Kaj Schwermer · Julia Chang |
| Oxford Phonics World: Level 2: Teacher's Book | 978-0-19-459629-9 | 2012 | Kaj Schwermer · Julia Chang |
| Oxford Phonics World: Level 2: Workbook | 978-0-19-459623-7 | 2012 | Kaj Schwermer · Julia Chang |