Gaya APA
MINE, I. (1985).
South Sumatra Coal Exploration Project Muara Tiga Besar Feasibility Study .
Bandung:
Direktorate General of Mines.
Gaya MLA
MINE, INTERIM.
"South Sumatra Coal Exploration Project Muara Tiga Besar Feasibility Study".
Bandung:
Direktorate General of Mines,
1985.
Batubara.