Zeithaml, V. (2000). services marketing: Integrating customer focus across the firm (2nd.). TMH.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZeithaml, Valeria. Services Marketing: Integrating Customer Focus Across the Firm. 2nd. New delhi: TMH, 2000.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZeithaml, Valeria. Services Marketing: Integrating Customer Focus Across the Firm. 2nd. TMH, 2000.
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