APA (7 वां संस्करण) प्रशस्ति पत्र

Riddle, D. (2001). Innovating for success in the export of services: A handbook. International Trade Centre.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Riddle, Dorothy. Innovating for Success in the Export of Services: A Handbook. Geneva: International Trade Centre, 2001.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Riddle, Dorothy. Innovating for Success in the Export of Services: A Handbook. International Trade Centre, 2001.