Gaya APA

Venture, K, G, J. (1986). South Sumatra Coal Exploration Project Banko Barat Feasibility Study, Volume III Mining . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Venture, Kinhill-Otto, Gold, Joint. "South Sumatra Coal Exploration Project Banko Barat Feasibility Study, Volume III Mining". Bandung: Pusat Sumber Daya Geologi, 1986. Batubara.