Youngseon, C., & Wildana, I. (2011). Why?: Light and Sound / Cahaya dan Suara. PT Elex Media Komputindo.
Chicago Style (17th ed.) CitationYoungseon, Cho, and Iwan Wildana. Why?: Light and Sound / Cahaya Dan Suara. PT Elex Media Komputindo, 2011.
MLA (8th ed.) CitationYoungseon, Cho, and Iwan Wildana. Why?: Light and Sound / Cahaya Dan Suara. PT Elex Media Komputindo, 2011.
Warning: These citations may not always be 100% accurate.