APA Citation

Hengky Alexander Mangkulo. (2009). Facebook on blackberry. Jakarta: Elex Media Komputindo.

Chicago Style Citation

Hengky Alexander Mangkulo. Facebook On Blackberry. Jakarta: Elex Media Komputindo, 2009.

MLA Citation

Hengky Alexander Mangkulo. Facebook On Blackberry. Jakarta: Elex Media Komputindo, 2009.

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