Anderson David. (2008). Statistics for Business and Economics (9TH.). Cengage Learning Limited.
Lua i Stíl Chicago (17ú heag.)Anderson David. Statistics for Business and Economics. 9TH. New Delhi: Cengage Learning Limited, 2008.
Lua MLA (9ú heag.)Anderson David. Statistics for Business and Economics. 9TH. Cengage Learning Limited, 2008.
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