Gaya APA
Kinhill, .
(1985).
Volume VI Social And Envionmental Considerations
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Bandung:
Direktorat Sumber Daya Mineral.
Gaya MLA
Kinhill, .
"Volume VI Social And Envionmental Considerations".
Bandung:
Direktorat Sumber Daya Mineral,
1985.
Batubara.