KUMAR V. (2012). LEGENDS IN MARKETING: CUSTOMER RELATIONSHIP MANAGEMENT -Vol.10. SAGE PUBLICATIONS.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKUMAR V. LEGENDS IN MARKETING: CUSTOMER RELATIONSHIP MANAGEMENT -Vol.10. NEW DELHI: SAGE PUBLICATIONS, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKUMAR V. LEGENDS IN MARKETING: CUSTOMER RELATIONSHIP MANAGEMENT -Vol.10. SAGE PUBLICATIONS, 2012.
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