Gaya APA

), N, E, N, (, C, Y. (2015). WHY? : ROCK & MINERAL (Cet. 1). Jakarta: PT Elex Media Komputindo.

Gaya MLA

), Novianti, Endah, Nawang, (, Cho, Youngseo. "WHY? : ROCK & MINERAL". Cet. 1 Jakarta: PT Elex Media Komputindo, 2015. Text.