Frémont, J. C., & Preuss, C. (1848). Map of Oregon and upper California from the surveys of John Charles Frémont and other authorities. The Senate.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrémont, John Charles, और Charles Preuss. Map of Oregon and Upper California from the Surveys of John Charles Frémont and Other Authorities. Washington: The Senate, 1848.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrémont, John Charles, और Charles Preuss. Map of Oregon and Upper California from the Surveys of John Charles Frémont and Other Authorities. The Senate, 1848.
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