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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रForeign Direct Investment In Africa: Performance and Potential. New york: United nations, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्रForeign Direct Investment In Africa: Performance and Potential. United nations, 1999.
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