Gaya APA

YeaRimDang, ., Novianti, E, N. (2021). Why? Dangerous Substance: Material Berbahaya . Jakarta: PT Elex Media Komputindo.

Gaya MLA

YeaRimDang, ., Novianti, Endah, Nawang. "Why? Dangerous Substance: Material Berbahaya". Jakarta: PT Elex Media Komputindo, 2021. Text.