APA (7th ed.) Citation

Eun, J. J. (2009). Why? Bencana Alam. Elex Media Komputindo.

Chicago Style (17th ed.) Citation

Eun, Jeon Ji. Why? Bencana Alam. Elex Media Komputindo, 2009.

MLA (8th ed.) Citation

Eun, Jeon Ji. Why? Bencana Alam. Elex Media Komputindo, 2009.

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