Esiemokal, O. (1971). Doctoral thesis on the theme, the Organization of African Unity and the Council of Europe. Universität zu Köln.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEsiemokal, Omoh. Doctoral Thesis on the Theme, the Organization of African Unity and the Council of Europe. Germany: Universität zu Köln, 1971.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEsiemokal, Omoh. Doctoral Thesis on the Theme, the Organization of African Unity and the Council of Europe. Universität zu Köln, 1971.
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