Gaya APA

SANNER, B, D. (2003). Larger geothermal heat pump plants in the central region of Germany (Vol. 32). Germany: Elseiver.

Gaya MLA

SANNER, Burkhard,, Dkk.. "Larger geothermal heat pump plants in the central region of Germany". Vol. 32 Germany: Elseiver, 2003. Jurnal.