Gaya APA

al), A, B. (2021). Batu bara Emas hitam penopang energi Indonesia (Ed.1, Cet.1). Yogyakarta: Gadjah Mada University Press.

Gaya MLA

al), Arief, Budiman...(et. "Batu bara Emas hitam penopang energi Indonesia". Ed.1, Cet.1 Yogyakarta: Gadjah Mada University Press, 2021. Text.