Flandrau, G. (1927). The Lewis and Clark expedition. Great Northern Railway.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFlandrau, Grace. The Lewis and Clark Expedition. [n.p.]: Great Northern Railway, 1927.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFlandrau, Grace. The Lewis and Clark Expedition. Great Northern Railway, 1927.
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