APA (7th ed.) Citation

Mangkulo, H. A. (2010). Facebook on Blackberry. PT Alex Media Komputindo.

Chicago Style (17th ed.) Citation

Mangkulo, Hengky Alexander. Facebook on Blackberry. PT Alex Media Komputindo, 2010.

MLA (8th ed.) Citation

Mangkulo, Hengky Alexander. Facebook on Blackberry. PT Alex Media Komputindo, 2010.

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