oyefusi aderoju. (2007). oil and the propensity to armed struggle in the niger delta region of nigeria. The World Bank Development Research Group.
Chicago Style (17. basım) Atıfoyefusi 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.
MLA (9th ed.) Atıfoyefusi aderoju. Oil and the Propensity to Armed Struggle in the Niger Delta Region of Nigeria. The World Bank Development Research Group, 2007.