Farris, P. W. B. (2010). Marketing Metrics (is.). Que Publishing.
Lua i Stíl Chicago (17ú heag.)Farris, Paul W; Bendle. Marketing Metrics. is. Indianapol: Que Publishing, 2010.
Lua MLA (9ú heag.)Farris, Paul W; Bendle. Marketing Metrics. is. Que Publishing, 2010.
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