SHANKER RAVI. (1993). SERVICES MARKETING: THE INDIAN EXPERIENCE. MANAS PUBLICATIONS LTD.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSHANKER RAVI. SERVICES MARKETING: THE INDIAN EXPERIENCE. DELHI: MANAS PUBLICATIONS LTD, 1993.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSHANKER RAVI. SERVICES MARKETING: THE INDIAN EXPERIENCE. MANAS PUBLICATIONS LTD, 1993.
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