Cita APA (7th ed.)

Armstead, H. C. H. (1978). Geothermal energy: Its past, present, and future contributions to the energy needs of man. E. & F.N. Spon.

Cita Chicago (17th ed.)

Armstead, H. Christopher H. Geothermal Energy: Its Past, Present, and Future Contributions to the Energy Needs of Man. London: E. & F.N. Spon, 1978.

Cita MLA (9th ed.)

Armstead, H. Christopher H. Geothermal Energy: Its Past, Present, and Future Contributions to the Energy Needs of Man. E. & F.N. Spon, 1978.