APA (7th ed.) Citation

Geothermal World Corporation. Geothermal world directory. Geothermal World Corporation.

Chicago Style (17th ed.) Citation

Geothermal World Corporation. Geothermal World Directory. Calif: Geothermal World Corporation.

MLA (9th ed.) Citation

Geothermal World Corporation. Geothermal World Directory. Geothermal World Corporation.

Warning: These citations may not always be 100% accurate.