| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Words Reader: Writing, Reading, Spelling: The Riddle of the Barking Dog | 978-0-13-489741-7 (0-13-489741-2) | 1994 | Louise Skinner |
| Words: Writing Reading Spelling/Student Book 1 | 978-0-13-952466-0 (0-13-952466-5) | 1993 | " |
| Words: Writing Reading Spelling: Student Book 2 | 978-0-13-953282-5 (0-13-953282-X) | 1993 | " |