APA (7th ed.) Citation

Seon, C. Y. (2011). Why? Sains Masa Depan. Elex Media Komputindo.

Chicago Style (17th ed.) Citation

Seon, Cho Young. Why? Sains Masa Depan. Elex Media Komputindo, 2011.

MLA (8th ed.) Citation

Seon, Cho Young. Why? Sains Masa Depan. Elex Media Komputindo, 2011.

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