Gaya APA
Simangunsong, H. (2011).
Laporan Joint Study and Development For Mineral Exploration .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Simangunsong, Hotma.
"Laporan Joint Study and Development For Mineral Exploration".
Bandung:
Pusat Sumber Daya Geologi,
2011.
Deskwork.