Gaya APA

Association, I, G. (1999). Iga News Newsletter of the International Geothermal Association No 36 April - June 1999 . Pisa: International Geothermal Association.

Gaya MLA

Association, International, Geothermal. "Iga News Newsletter of the International Geothermal Association No 36 April - June 1999". Pisa: International Geothermal Association, 1999. Text.