Gaya APA
Roeslan, K. (1975).
The Raw Materials For The Portland Cement Project In Baturaja, South Sumatra .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Roeslan, Kendarsi.
"The Raw Materials For The Portland Cement Project In Baturaja, South Sumatra".
Bandung:
Pusat Sumber Daya Geologi,
1975.
Bukan Logam.