Robert Vitale. Business to Business Marketing-Analysis and Practice. Pearson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRobert Vitale. Business to Business Marketing-Analysis and Practice. Pearson.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRobert Vitale. Business to Business Marketing-Analysis and Practice. Pearson.
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