Gaya APA
J.Wilcke, S, A, A. (LGLF19862).
Melawi River Project-West Kalimantan .
United State:
Pusat Sumber Daya Geologi.
Gaya MLA
J.Wilcke, S.Widasaputra, And, Amiruddin.
"Melawi River Project-West Kalimantan".
United State:
Pusat Sumber Daya Geologi,
LGLF19862.
Logam.