HILLIER, F. S., & LIEBERMAN, G. J. (1990). Introduction to operations research.-- ed. 5. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)HILLIER, Frederick S., agus Gerald J. LIEBERMAN. Introduction to Operations Research.-- Ed. 5. New York: McGraw-Hill, 1990.
Lua MLA (9ú heag.)HILLIER, Frederick S., agus Gerald J. LIEBERMAN. Introduction to Operations Research.-- Ed. 5. McGraw-Hill, 1990.
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