Gaya APA

Youngseon, Cho. (2020). Why?: Dangerous Substance = Material Berbahaya . Jakarta: Elex Media Komputindo.

Gaya Chicago

Youngseon, Cho. Why?: Dangerous Substance = Material Berbahaya. Jakarta: Elex Media Komputindo, 2020. Text.

Gaya MLA

Youngseon, Cho. Why?: Dangerous Substance = Material Berbahaya. Jakarta: Elex Media Komputindo, 2020. Text.

Gaya Turabian

Youngseon, Cho. Why?: Dangerous Substance = Material Berbahaya. Jakarta: Elex Media Komputindo, 2020. Print.