William E. · William Ecenbarger · William Eschenbacher
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Practical German Grammar | 978-1-146-45256-4 (1-146-45256-X) | 2010 | |
| Graded German Lessons: Being a Practical German Grammar | 978-1-145-30432-1 (1-145-30432-X) | 2010 | William Coe Collar |