Levin, R. I. (1982). Quantitative approaches to management/5e (5th ed.). MC Graw Hill International.
Čikaški stil citiranjaLevin, Richard I. Quantitative Approaches to Management/5e. 5th ed. Auckland: MC Graw Hill International, 1982.
MLA način citiranjaLevin, Richard I. Quantitative Approaches to Management/5e. 5th ed. MC Graw Hill International, 1982.
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