Christopher, H., & Armstead, H. (1983). Geothermal energy: : its past, present, and future contributions to the energy needs of man (2nd ed.). London: E. & F. N. Spon.
Παραπομπή Chicago StyleChristopher, H., and H. Armstead. Geothermal Energy: : Its Past, Present, and Future Contributions to the Energy Needs of Man. 2nd ed. London: E. & F. N. Spon, 1983.
Παραπομπή MLAChristopher, H., and H. Armstead. Geothermal Energy: : Its Past, Present, and Future Contributions to the Energy Needs of Man. 2nd ed. London: E. & F. N. Spon, 1983.
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