Mason, R. D. (1990). Statistical techniques in business and economics. (7th ed.). Irwin.
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Chicago-čujuhus (17. p.)
Mason, Robert D. Statistical Techniques in Business and Economics. 7th ed. Boston: Irwin, 1990.
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MLA-čujuhus (9. p.)
Mason, Robert D. Statistical Techniques in Business and Economics. 7th ed. Irwin, 1990.
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