Onwuka, R. I. (1989). Africa in world politics, into the 1990s. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOnwuka, Ralph I. Africa in World Politics, into the 1990s. Basingstoke, Hants, Eng: Macmillan, 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOnwuka, Ralph I. Africa in World Politics, into the 1990s. Macmillan, 1989.
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