APA (7th ed.) Citation

Ellis, P. F., II, Conover, M. F., & States), N. A. (. (1981). Materials selection guidelines for geothermal energy utilization systems. Radian Corporation.

Chicago Style (17th ed.) Citation

Ellis, P. F., II, M. F. Conover, and Not Available (United States). Materials Selection Guidelines for Geothermal Energy Utilization Systems. Radian Corporation, 1981.

MLA (9th ed.) Citation

Ellis, P. F., II, et al. Materials Selection Guidelines for Geothermal Energy Utilization Systems. Radian Corporation, 1981.