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शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रoyefusi aderoju. Oil and the Propensity to Armed Struggle in the Niger Delta Region of Nigeria. Washington, D.C.: The World Bank Development Research Group, 2007.
एमएलए (9वां संस्करण) प्रशस्ति पत्रoyefusi aderoju. Oil and the Propensity to Armed Struggle in the Niger Delta Region of Nigeria. The World Bank Development Research Group, 2007.
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