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..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Great 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Great Northern Railway Company (U.S.). Public Relations Department. A Condensed History of the Great Northern Railway. Public Relations Dept., Great Northern Railway Co., 1955.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.