Rand McNally and Company. (1940). Washington-Oregon Union Oil Road map. Rand McNally and Company [for] Union Oil Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRand McNally and Company. Washington-Oregon Union Oil Road Map. [Chicago, Ill.]: Rand McNally and Company [for] Union Oil Company, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRand McNally and Company. Washington-Oregon Union Oil Road Map. Rand McNally and Company [for] Union Oil Company, 1940.
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