HARNETT DONALD L. (1980). INTRODUCTORY STATISTICAL ANALYSIS (2ND.). ADDISON-WESLEY.
Lua i Stíl Chicago (17ú heag.)HARNETT DONALD L. INTRODUCTORY STATISTICAL ANALYSIS. 2ND. ADDISON-WESLEY, 1980.
Lua MLA (9ú heag.)HARNETT DONALD L. INTRODUCTORY STATISTICAL ANALYSIS. 2ND. ADDISON-WESLEY, 1980.
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