APA Citation

BERKLEY, S. (2009). Speak to influence: How to unlock the hidden power of your voice. Kuala Lumpur: Ar-Risalah.

Chicago Style Citation

BERKLEY, Susan. Speak to Influence: How to Unlock the Hidden Power of Your Voice. Kuala Lumpur: Ar-Risalah, 2009.

MLA Citation

BERKLEY, Susan. Speak to Influence: How to Unlock the Hidden Power of Your Voice. Kuala Lumpur: Ar-Risalah, 2009.

Warning: These citations may not always be 100% accurate.