Gaya APA
Simanjutak, H, W.
(2001).
Of Primary Diamond Sources In Kalimantan
.
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Simanjutak, HR., Wilher.
"Of Primary Diamond Sources In Kalimantan".
Bandung:
Pusat Sumber Daya Geologi,
2001.
Bukan Logam.