CAFARELLI E J. (1980). DEVELOPING NEW PRODUCTS & REPOSITIONING MATURE BRANDS. JOHN WILEY & SON.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCAFARELLI E J. DEVELOPING NEW PRODUCTS & REPOSITIONING MATURE BRANDS. NEW YORK: JOHN WILEY & SON, 1980.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCAFARELLI E J. DEVELOPING NEW PRODUCTS & REPOSITIONING MATURE BRANDS. JOHN WILEY & SON, 1980.
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