Gaya APA
BEMMELEN, R, V. (1949).
The Geology of Indonesia Vol. IA : General Geology .
The Hague:
Government Printing Office.
Gaya MLA
BEMMELEN, R.W., VAN.
"The Geology of Indonesia Vol. IA : General Geology".
The Hague:
Government Printing Office,
1949.
Text.