HANKE JOHN E. (1994). UNDERSTANDING BUSINESS STATISTICS-STUDY GUIDE PREPARED BY HATMAN WALT; PAUL D VANNESS. IRWIN MCGRAW-HILL.
Lua i Stíl Chicago (17ú heag.)HANKE JOHN E. UNDERSTANDING BUSINESS STATISTICS-STUDY GUIDE PREPARED BY HATMAN WALT; PAUL D VANNESS. BURR RIDGE: IRWIN MCGRAW-HILL, 1994.
Lua MLA (9ú heag.)HANKE JOHN E. UNDERSTANDING BUSINESS STATISTICS-STUDY GUIDE PREPARED BY HATMAN WALT; PAUL D VANNESS. IRWIN MCGRAW-HILL, 1994.
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