Malone, M. P., & Etulain, R. W. (1989). The American West: A twentieth-century history. University of Nebraska Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMalone, Michael P., और Richard W. Etulain. The American West: A Twentieth-century History. Lincoln: University of Nebraska Press, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMalone, Michael P., और Richard W. Etulain. The American West: A Twentieth-century History. University of Nebraska Press, 1989.
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