Berkley, Susan <br/><br/>
Speak to influence :  how to unlock the hidden power of your voice / 
Susan Berkley 
 - Kuala Lumpur :  Ar-Risalah Product,  2009 
 - iii, 188 p. :  ill. ;  21 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9789832672784 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oral communication<br/>Public speaking