APA (7th ed.) Citation

Armstead, H. C. H. (1978). Geothermal energy: Its past, present and future contrib. to the energy needs of man. Spon.

Chicago Style (17th ed.) Citation

Armstead, Hugh Christopher H. Geothermal Energy: Its Past, Present and Future Contrib. to the Energy Needs of Man. London: Spon, 1978.

MLA (9th ed.) Citation

Armstead, Hugh Christopher H. Geothermal Energy: Its Past, Present and Future Contrib. to the Energy Needs of Man. Spon, 1978.