Gaya APA

Mines, M, O, M, A, E, D, G, O. (1986). Geological Report Volume II Geology . Bandung: Ministry Of Mines And Energy Directorate General Of Mines.

Gaya MLA

Mines, MInistry, Of, MInes, And, Energy, Directorate, General, Of. "Geological Report Volume II Geology". Bandung: Ministry Of Mines And Energy Directorate General Of Mines, 1986. Batubara.