C.M. ยท C. Matthews
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Business Interactions | 978-0-13-100876-2 | 1987 |
| Speaking Solutions | 978-0-13-100603-4 | 1994 |
| Speaking Solutions: Interaction, Presentation, Listening and Pronunciation Skills | 978-0-13-100611-9 | 1994 |
| Speaking Solutions: Interaction, Presentation, Listening, and Pronunciation Skills | 978-0-13-701229-9 | 1994 |