Gaya APA

Ukar.W.Sulistiyo, . (1981). Status Baper The Development And Utilization Programme Of Mall Coal Resources In Indonesia . Canada: Dapartemen Of Mines And Energy Directorate General Of Mining Mineral Technology Development Centre.

Gaya MLA

Ukar.W.Sulistiyo, . "Status Baper The Development And Utilization Programme Of Mall Coal Resources In Indonesia". Canada: Dapartemen Of Mines And Energy Directorate General Of Mining Mineral Technology Development Centre, 1981. Batubara.