Gaya APA

Pontianak, F, S, F, P, P, P, I. (1987). Finnida Ministry Of Mines And Energy Of Indonesia Directorate Of Coal . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Pontianak, Feasibility, Study, For, Peat, Power, Plant, In. "Finnida Ministry Of Mines And Energy Of Indonesia Directorate Of Coal". Bandung: Pusat Sumber Daya Geologi, 1987. Batubara.