Gaya APA

South Sumatera Coal Exploration Project Suban Jeriji Utara PRE.FESIBILITY STUDY. (1987). Bandung: Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal.

Gaya MLA

South Sumatera Coal Exploration Project Suban Jeriji Utara PRE.FESIBILITY STUDY. . Bandung: Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal, 1987. Batubara.