Riddle, D. (2001). Innovating for success in the export of services: A handbook. International Trade Centre.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiddle, Dorothy. Innovating for Success in the Export of Services: A Handbook. Geneva: International Trade Centre, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRiddle, Dorothy. Innovating for Success in the Export of Services: A Handbook. International Trade Centre, 2001.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.