Kohler, H. (1988). Statistics for business and economics (2nd ed.). Scott, Foresman.
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Chicago-čujuhus (17. p.)
Kohler, Heinz. Statistics for Business and Economics. 2nd ed. Glenview, Ill.: Scott, Foresman, 1988.
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MLA-čujuhus (9. p.)
Kohler, Heinz. Statistics for Business and Economics. 2nd ed. Scott, Foresman, 1988.
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