Gaya APA
HUTTRER, G, W. (2001).
Status of world geothermal power generation 1995-2000 (The) (Vol. 30).
USA:
Elsevier Ltd.
Gaya MLA
HUTTRER, Gerald,, W..
"Status of world geothermal power generation 1995-2000 (The)".
Vol. 30
USA:
Elsevier Ltd,
2001.
Jurnal.