Gaya APA
H.Malissa, T. (1957).
Report On The Chemico-Analytical Coal Investigations Carried Out In Indonesia .
Bandung:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal.
Gaya MLA
H.Malissa, Techn.Dipl.Ing..
"Report On The Chemico-Analytical Coal Investigations Carried Out In Indonesia".
Bandung:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal,
1957.
Batubara.