Anderson, D. R., Sweeney, D. J., Williams, T. A., Sweeney, D. J., & Williams, T. A. (1991). An introduction to management science: Quantitative Approaches to Decision Making (6th ed.). St Paul ; New York: West.

Anderson, David Ray, Dennis J. Sweeney, Thomas Arthur Williams, Dennis J. Sweeney, and Thomas Arthur Williams. An Introduction to Management Science: Quantitative Approaches to Decision Making. 6th ed. St Paul ; New York: West, 1991.

Anderson, David Ray, et al. An Introduction to Management Science: Quantitative Approaches to Decision Making. 6th ed. St Paul ; New York: West, 1991.