Great Northern Railway Company (U.S.). Public Relations Department. (1955). A condensed history of the Great Northern Railway. Public Relations Dept., Great Northern Railway Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.). Public Relations Department. A Condensed History of the Great Northern Railway. St. Paul, Minn.: Public Relations Dept., Great Northern Railway Co., 1955.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGreat Northern Railway Company (U.S.). Public Relations Department. A Condensed History of the Great Northern Railway. Public Relations Dept., Great Northern Railway Co., 1955.
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