Gaya APA
Buchheltz, H., Parmadi, . (1974).
Sumatra Regional Planning Study Province South Sumatra Land Use .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Buchheltz, H.., Parmadi, .
"Sumatra Regional Planning Study Province South Sumatra Land Use".
Bandung:
Pusat Sumber Daya Geologi,
1974.
Bukan Logam.