Gaya APA
Tongeren, W, V. (1941).
Geological Description of the Deepmine Kelapa Kampit (1906 - 1940) .
Bandung:
PT GEOSERVICES.
Gaya MLA
Tongeren, W., Van.
"Geological Description of the Deepmine Kelapa Kampit (1906 - 1940)".
Bandung:
PT GEOSERVICES,
1941.
Text.