APA (7th ed.) Citation

Grey, Z., & Mitchell, L. C. (1998). Riders of the purple sage. Oxford University Press.

Chicago Style (17th ed.) Citation

Grey, Zane, and Lee Clark Mitchell. Riders of the Purple Sage. Oxford ; New York: Oxford University Press, 1998.

MLA (9th ed.) Citation

Grey, Zane, and Lee Clark Mitchell. Riders of the Purple Sage. Oxford University Press, 1998.