APA (7th ed.) Citation

Roberts, D. F. (1978). Climate and human variability (2d ed.). Cummings Pub. Co..

Chicago Style (17th ed.) Citation

Roberts, D. F. Climate and Human Variability. 2d ed. Menlo Park, Calif.: Cummings Pub. Co., 1978.

MLA (9th ed.) Citation

Roberts, D. F. Climate and Human Variability. 2d ed. Cummings Pub. Co., 1978.