APA Citation

Haris Purba, D. P. S. (2007). Speeches That Changed The World.

Chicago Style Citation

Haris Purba, Daniel P Sumiharti. Speeches That Changed The World. 2007.

MLA Citation

Haris Purba, Daniel P Sumiharti. Speeches That Changed The World. 2007.

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