Gaya APA

Geologi, P, S, D. (1986). Ombilin II Coal Mine Development And Transportation Project Geological Report, V TO IX . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Geologi, Pusat, Sumber, Daya. "Ombilin II Coal Mine Development And Transportation Project Geological Report, V TO IX". Bandung: Pusat Sumber Daya Geologi, 1986. Encyclopaedia.