U.S. Agency for International Development. Communications Media Division. Performance standards. s.n.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रU.S. Agency for International Development. Communications Media Division. Performance Standards. [Manila: s.n.
एमएलए (9वां संस्करण) प्रशस्ति पत्रU.S. Agency for International Development. Communications Media Division. Performance Standards. s.n.
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