Gray, W. H. (1870). A history of Oregon, 1792-1849: Drawn from personal observation and authentic information. Harris and Holman; The American news company; [etc., etc.].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGray, W. H. A History of Oregon, 1792-1849: Drawn from Personal Observation and Authentic Information. Portland, Or., New York: Harris and Holman; The American news company; [etc., etc.], 1870.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGray, W. H. A History of Oregon, 1792-1849: Drawn from Personal Observation and Authentic Information. Harris and Holman; The American news company; [etc., etc.], 1870.
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