APA Style

Cho, Youngseon. (2020). Why? dangerous substance = material berbahaya . Jakarta: Elex Media Komputindo.

Chicago Style

Cho, Youngseon. Why? dangerous substance = material berbahaya. Jakarta: Elex Media Komputindo, 2020. Text.

MLA Style

Cho, Youngseon. Why? dangerous substance = material berbahaya. Jakarta: Elex Media Komputindo, 2020. Text.

Turabian Style

Cho, Youngseon. Why? dangerous substance = material berbahaya. Jakarta: Elex Media Komputindo, 2020. Print.