Johnston, R. (2018). Service Operations Management: Improving Service Delivery (4th.). Pearson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnston, Robert. Service Operations Management: Improving Service Delivery. 4th. Pearson, 2018.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJohnston, Robert. Service Operations Management: Improving Service Delivery. 4th. Pearson, 2018.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.