Gaya APA

CHO, Y., Novianti, E, N. (2019). Why? 3D Printing (-). Jakarta: PT Elex Media Komputindo.

Gaya MLA

CHO, Youngsun., Novianti, Endah, Nawang. "Why? 3D Printing". - Jakarta: PT Elex Media Komputindo, 2019. Text.