"I know that most of us have been in a situation where not know what to say before a group of people. Anyone who went through this experience would never forget such an embarrassing moment. Now is the time when you should put all this behind you and turn over a new leaf because now is the time for a change. With the few steps, tips, and exercises, speaking up in public will be a piece of cake."
It Is a great book about communication and I think it might help you to get a better career and effective communication. This Book was written by a Teacher at a language centre