Hillier, F. S., Lieberman, G. J., Schmedders, K., Stephens, M., Hillier, M. S., & O'Sullivan, M. (2001). Introduction to operations research (7th ed.). Boston: McGraw-Hill.

Hillier, Frederick S., Gerald J. Lieberman, Karl Schmedders, Molly Stephens, Mark S. Hillier, and Michael O'Sullivan. Introduction to Operations Research. 7th ed. Boston: McGraw-Hill, 2001.

Hillier, Frederick S., et al. Introduction to Operations Research. 7th ed. Boston: McGraw-Hill, 2001.