McGregor, A. C. (1982). Counting sheep: From open range to agribusiness on the Columbia Plateau. University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcGregor, Alexander Campbell. Counting Sheep: From Open Range to Agribusiness on the Columbia Plateau. Seattle: University of Washington Press, 1982.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcGregor, Alexander Campbell. Counting Sheep: From Open Range to Agribusiness on the Columbia Plateau. University of Washington Press, 1982.
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