TY  - BOOK
AU  - Berkley,Susan
TI  - Speak to influence: how to unlock the hidden power of your voice 
SN  - 9789832672784
PY  - 2009///
CY  - Kuala Lumpur
PB  - Ar-Risalah Product
KW  - Oral communication
KW  - Public speaking
N1  - Includes index
ER  -