Gaya APA

Project, W, C, O, C, S, C, E. (1988). Report On Semi Detailed Exploration Of Central Sumatra Coal Exploration Project, Appendix III Coal Outcrop Sketch . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Project, Working, Commitee, Of, Central, Sumatera, Coal, Eksploration. "Report On Semi Detailed Exploration Of Central Sumatra Coal Exploration Project, Appendix III Coal Outcrop Sketch". Bandung: Pusat Sumber Daya Geologi, 1988. Text.