Gaya APA

HILLER, F, S., LIEBERMAN, G, J. (1986). Introduction to operations research (4th ed.). United States of America: Mc Graw-Hill.

Gaya MLA

HILLER, Frederick, S.., LIEBERMAN, Gerald, J.. "Introduction to operations research". 4th ed. United States of America: Mc Graw-Hill, 1986. Text.