R Wandel · R. Wendler · Robert M. Wendlinger
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Effective Letters | 978-0-07-051792-9 (0-07-051792-4) | 1964 | James M. Reid |
| Effective Letters: Instructor's | 978-0-07-051793-6 (0-07-051793-2) | 1964 | " |