Great Northern Railway Company (U.S.). (1926). Red River trails. Great Northern Railway Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.). Red River Trails. [St. Paul: Great Northern Railway Co., 1926.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.). Red River Trails. Great Northern Railway Co., 1926.
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