Gaya APA

Venture, K, G, J. (1987). South Sumatra Coal Exploration Project,Banko Barat Feasibility Study Addendum 1 . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Venture, Kinhill-Otto, Gold, Joint. "South Sumatra Coal Exploration Project,Banko Barat Feasibility Study Addendum 1". Bandung: Pusat Sumber Daya Geologi, 1987. Batubara.