APA (7 वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development. Office of Program and Methodology. (1975). A directory of institutional resources; U.S. centers of competence for international development.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development. Office of Program and Methodology. A Directory of Institutional Resources; U.S. Centers of Competence for International Development. Washington, 1975.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

U.S. Agency for International Development. Office of Program and Methodology. A Directory of Institutional Resources; U.S. Centers of Competence for International Development. 1975.