Gaya APA

Energy, M, O, M, A. (1986). Ombilin II Coal Mine Development And Transportation Project, Conceptual Report Volume VI Seaport Review . Bandung: Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal.

Gaya MLA

Energy, Ministry, Of, Mines, And. "Ombilin II Coal Mine Development And Transportation Project, Conceptual Report Volume VI Seaport Review". Bandung: Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal, 1986. Batubara.