There's no such thing as public speaking making any presentation or speech as persuasive as a one-on-one conversation
| Prif Awdur: | |
|---|---|
| Awduron Eraill: | |
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
New York
Prentice Hall Press
2007.
|
| Pynciau: |