American Heritage. (1961). Cowboys and cattle country. Harper and Brothers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAmerican Heritage. Cowboys and Cattle Country. New York: Harper and Brothers, 1961.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAmerican Heritage. Cowboys and Cattle Country. Harper and Brothers, 1961.
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