FLETCHER J H. (2001). INSIDE INFORMATION: MAKING SENSE OF MARKETING DATA. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)FLETCHER J H. INSIDE INFORMATION: MAKING SENSE OF MARKETING DATA. USA: JOHN WILEY AND SONS, 2001.
Lua MLA (9ú heag.)FLETCHER J H. INSIDE INFORMATION: MAKING SENSE OF MARKETING DATA. JOHN WILEY AND SONS, 2001.
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