Gaya APA

Hamidsyah, H. (1982). Department Of Mines And Energy Directorate General Of Mines Directorate Of Mineral Resources Sub Directorate Of Geochemistry . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Hamidsyah, Hasjrul. "Department Of Mines And Energy Directorate General Of Mines Directorate Of Mineral Resources Sub Directorate Of Geochemistry". Bandung: Pusat Sumber Daya Geologi, 1982. Bukan Logam.