Gray, W. H. A History of Oregon, 1792-1849 Drawn From Personal Observation and Authentic Information.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGray, W. H. A History of Oregon, 1792-1849 Drawn From Personal Observation and Authentic Information.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGray, W. H. A History of Oregon, 1792-1849 Drawn From Personal Observation and Authentic Information.
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