APA (7th ed.) Citation

Cronon, W., Miles, G. A., & Gitlin, J. (1992). Under an open sky: Rethinking America's Western past. W.W. Norton.

Chicago Style (17th ed.) Citation

Cronon, William, George A. Miles, and Jay Gitlin. Under an Open Sky: Rethinking America's Western Past. New York: W.W. Norton, 1992.

MLA (8th ed.) Citation

Cronon, William, et al. Under an Open Sky: Rethinking America's Western Past. W.W. Norton, 1992.

Warning: These citations may not always be 100% accurate.