توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Schmidt, M. F. (1937). Operating expenses of the retail lumber yards in the mountain states region, 1936. Bureau of Business and Government Research, Universtiy of Colorado.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Schmidt, Martin Frederick. Operating Expenses of the Retail Lumber Yards in the Mountain States Region, 1936. [Boulder]: Bureau of Business and Government Research, Universtiy of Colorado, 1937.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Schmidt, Martin Frederick. Operating Expenses of the Retail Lumber Yards in the Mountain States Region, 1936. Bureau of Business and Government Research, Universtiy of Colorado, 1937.