Levin, R. I., Rubin, D. S., & Stinson, J. P. (1986). Quantitative approaches to Management/6e (6th ed.). McGraw Hill.

Levin, Richard I., David S. Rubin, and Joel P. Stinson. Quantitative Approaches to Management/6e. 6th ed. New York: McGraw Hill, 1986.

Levin, Richard I., et al. Quantitative Approaches to Management/6e. 6th ed. McGraw Hill, 1986.