Levin & Kirkpatrick. (1965). Quantitative approaches to management. McGraw hill book company.
Čikaški stil citiranjaLevin i Kirkpatrick. Quantitative Approaches to Management. New York: McGraw hill book company, 1965.
MLA način citiranjaLevin i Kirkpatrick. Quantitative Approaches to Management. McGraw hill book company, 1965.
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