Gaya APA
E., D, L, J, C, V, E, M. (1935).
The Raw Materials For Portland Cement Near Grissee .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
E., Dr., L., J., C., Van, Es,, M..
"The Raw Materials For Portland Cement Near Grissee".
Bandung:
Pusat Sumber Daya Geologi,
1935.
Bukan Logam.