Gaya APA

Lieberman, F, S, H, ;, G, J. (1980). Introduction to operation research (ed. 3). OKLAND, CALIFORNIA: HOLDEN DAY, Inc.

Gaya MLA

Lieberman, Frederick, S., Hiller, ;, Gerarld, J.. "Introduction to operation research". ed. 3 OKLAND, CALIFORNIA: HOLDEN DAY, Inc, 1980. Text.