Gaya APA
Sutopo, . et al (2003).
A Silver Year Of Indonesian geothermal Development - A Lesson Learn .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Sutopo, . et al.
"A Silver Year Of Indonesian geothermal Development - A Lesson Learn".
Bandung:
Pusat Sumber Daya Geologi,
2003.
Fungsional.