Gaya APA

FINGER, J., BLANKENSHIP, D. (2010). HANDBOOK OF BEST PRACTICES FOR GEOTHERMAL DRILLING . CALIFORNIA: SANDIA NATIONAL LABORATORIES.

Gaya MLA

FINGER, JHON., BLANKENSHIP, DOUG. "HANDBOOK OF BEST PRACTICES FOR GEOTHERMAL DRILLING". CALIFORNIA: SANDIA NATIONAL LABORATORIES, 2010. Text.