| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Word Roots, A1: Learning the Building Blocks of Better Spelling and Vocabulary | 978-0-89455-804-7 (0-89455-804-8) | 2002 | |
| Word Roots Beginning: Learning the Building Blocks of Better Spelling and Vocabulary | 978-1-60144-134-8 (1-60144-134-7) | 2012 | Stephanie W. Stevens |
| Word Roots: Learning the Building Blocks of Better Spelling & Vocabulary, Level B, Book 1 | 978-0-89455-805-4 (0-89455-805-6) | 2002 | |