توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Bly, M. T. (1893). Descriptive economics an introduction to economic science for use in academies, high and normal schools, and business colleges. American book Co..

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Bly, Myron T. Descriptive Economics an Introduction to Economic Science for Use in Academies, High and Normal Schools, and Business Colleges. New York, Cincinnati: American book Co., 1893.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Bly, Myron T. Descriptive Economics an Introduction to Economic Science for Use in Academies, High and Normal Schools, and Business Colleges. American book Co., 1893.