APA (7th ed.) Citation

Decade of North American Geology Project, Blackwell, D. D., Steele, J. L., & Chapman, D. S. (1992). Geothermal map of North America. Geological Society of America, Inc..

Chicago Style (17th ed.) Citation

Decade of North American Geology Project, David D. Blackwell, John L. Steele, and David S. Chapman. Geothermal Map of North America. Boulder, Colorado: Geological Society of America, Inc., 1992.

MLA (9th ed.) Citation

Decade of North American Geology Project, et al. Geothermal Map of North America. Geological Society of America, Inc., 1992.