(2001). Harvard business review on customer relationship management. Harvard Business School.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHarvard Business Review on Customer Relationship Management. Harvard Business School, 2001.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHarvard Business Review on Customer Relationship Management. Harvard Business School, 2001.
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