Gaya APA
Harjanto, S. (1987).
The Most Potential Phosphate Deposits In Jawa .
Bandung:
Direktorat Sumber Daya Mineral.
Gaya MLA
Harjanto, S..
"The Most Potential Phosphate Deposits In Jawa".
Bandung:
Direktorat Sumber Daya Mineral,
1987.
Bukan Logam.