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Lua i Stíl Chicago (17ú heag.)BAKER RONALD J. MEASURE WHAT MATTERS TO CUSTOMERS: USING KEY PREDICTIVE INDICATORS. NEW YORK: JOHN WILEY & SONS, INC, 2006.
Lua MLA (9ú heag.)BAKER RONALD J. MEASURE WHAT MATTERS TO CUSTOMERS: USING KEY PREDICTIVE INDICATORS. JOHN WILEY & SONS, INC, 2006.
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