Gaya APA
Bemmelen, R, V.
(1970).
The Geology of Indonesia, Volume II, Economic Geology
.
Netherlands:
Martinus Nijhoff.
Gaya MLA
Bemmelen, R.W., Van.
"The Geology of Indonesia, Volume II, Economic Geology".
Netherlands:
Martinus Nijhoff,
1970.
Text.