Levin, R. I., & Rubin, D. S. (1989). Quantitative approaches to management (7th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Levin, Richard I., i David S. Rubin. Quantitative Approaches to Management. 7th ed. New York: McGraw-Hill, 1989.
Cita MLA (9th ed.)Levin, Richard I., i David S. Rubin. Quantitative Approaches to Management. 7th ed. McGraw-Hill, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.