Oregon. Department of Geology and Mineral Industries. (1968). Oregon's gold placers. Issued by State of Oregon, Department of Geology and Mineral Industries.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOregon. Department of Geology and Mineral Industries. Oregon's Gold Placers. [Salem, Or.]: Issued by State of Oregon, Department of Geology and Mineral Industries, 1968.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOregon. Department of Geology and Mineral Industries. Oregon's Gold Placers. Issued by State of Oregon, Department of Geology and Mineral Industries, 1968.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.