University of Alabama. Bureau of Business Research & University of Alabama. Center for Business and Economic Research. (1955). Alabama business. Bureau of Business and Economic Research, University of Alabama.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of Alabama. Bureau of Business Research و University of Alabama. Center for Business and Economic Research. Alabama Business. University, Ala.: Bureau of Business and Economic Research, University of Alabama, 1955.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)University of Alabama. Bureau of Business Research و University of Alabama. Center for Business and Economic Research. Alabama Business. Bureau of Business and Economic Research, University of Alabama, 1955.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.