APA

berman e. r., . (1975). geothermal energy. london: noyes data corporation.

Chicago

berman edward r, . 1975. geothermal energy. london: noyes data corporation.

Harvard

berman e. r., . (1975). geothermal energy. london: noyes data corporation.

MLA

berman edward r, . geothermal energy. london: noyes data corporation. 1975.