Zeithaml,Valarie A. (2018). Services Marketing (7th.). Tata McGraw Hill Education.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रZeithaml,Valarie A. Services Marketing. 7th. Chennai: Tata McGraw Hill Education, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रZeithaml,Valarie A. Services Marketing. 7th. Tata McGraw Hill Education, 2018.
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