Armstead, H. C. H. (1978). Geothermal energy: Its past, present and future contrib. to the energy needs of man. Spon.
Chicago-Zitierstil (17. Ausg.)Armstead, Hugh Christopher H. Geothermal Energy: Its Past, Present and Future Contrib. to the Energy Needs of Man. London: Spon, 1978.
MLA-Zitierstil (9. Ausg.)Armstead, Hugh Christopher H. Geothermal Energy: Its Past, Present and Future Contrib. to the Energy Needs of Man. Spon, 1978.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.