Gaya APA
PKIN, S. (1964).
REPORT ON PRESPECTING-EXPLORATION SERVEY ON FIRE-PROOF CLAYS AND KAOLINS IN SOUTH EASTERN KALIMANTAN 1963-1964. .
Bandung:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal.
Gaya MLA
PKIN, S.G.KHARA.
"REPORT ON PRESPECTING-EXPLORATION SERVEY ON FIRE-PROOF CLAYS AND KAOLINS IN SOUTH EASTERN KALIMANTAN 1963-1964.".
Bandung:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal,
1964.
Logam.