Hilton, M. (1993). Assessing the quality of service: Facilitator's guide. Aga Khan Foundation.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHilton, Martine. Assessing the Quality of Service: Facilitator's Guide. Washington, DC: Aga Khan Foundation, 1993.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHilton, Martine. Assessing the Quality of Service: Facilitator's Guide. Aga Khan Foundation, 1993.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.