MASON, R. D. (1999). Statistical techniques in business and economics. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)MASON, Robert D. Statistical Techniques in Business and Economics. McGraw-Hill, 1999.
Lua MLA (8ú heag.)MASON, Robert D. Statistical Techniques in Business and Economics. McGraw-Hill, 1999.
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