TY  - BOOK
AU  - Berkley, Susan
TI  - Speak to influence : how to unlock the hidden power of your voice
SN  - 9789832672784
U1  - 808.5 BER 
PY  - 2009///
CY  - Kuala Lumpur
PB  - Ar Risalah
KW  - Public speaking
KW  -  Oral communication
ER  -