Knowlton, C. (2017). Cattle kingdom: The hidden history of the cowboy West. Houghton Mifflin Harcourt.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKnowlton, Christopher. Cattle Kingdom: The Hidden History of the Cowboy West. Boston: Houghton Mifflin Harcourt, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKnowlton, Christopher. Cattle Kingdom: The Hidden History of the Cowboy West. Houghton Mifflin Harcourt, 2017.
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