Gaya APA
Shepherd, J. (1962).
Progress report to The Indonesian Goverment, Number 3 .
Vienna:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal.
Gaya MLA
Shepherd, J..
"Progress report to The Indonesian Goverment, Number 3".
Vienna:
Dinas Vulkanologi Bagian Projek Survey Enersi Geothermal,
1962.
Logam.