توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

University of Maryland, College Park. Bureau of Business and Economic Research. (1955). Estimating Maryland government and business potentials.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

University of Maryland, College Park. Bureau of Business and Economic Research. Estimating Maryland Government and Business Potentials. College Park, 1955.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

University of Maryland, College Park. Bureau of Business and Economic Research. Estimating Maryland Government and Business Potentials. 1955.