APA (7th ed.) Citation

ScienceDirect (Online service), Harrison, R., Mortimer, N. D., & Smarason, O. B. (1990). Geothermal heating: A handbook of engineering economics (First edition.). Pergamon Press.

Chicago Style (17th ed.) Citation

ScienceDirect (Online service), R. Harrison, N. D. Mortimer, and O. B. Smarason. Geothermal Heating: A Handbook of Engineering Economics. First edition. Oxford ; New York: Pergamon Press, 1990.

MLA (9th ed.) Citation

ScienceDirect (Online service), et al. Geothermal Heating: A Handbook of Engineering Economics. First edition. Pergamon Press, 1990.