Gaya APA

Youngsun, C., Novianti, E, N. (2019). Why? 3D Printing . Jakarta: Elex Media Komputindo.

Gaya MLA

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