APA-čujuhus (7. p.)

Levin, R. I. (1992). Quantitative approaches to management. McGraw-Hill.

Chicago-čujuhus (17. p.)

Levin, Richard I. Quantitative Approaches to Management. New York: McGraw-Hill, 1992.

MLA-čujuhus (9. p.)

Levin, Richard I. Quantitative Approaches to Management. McGraw-Hill, 1992.

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