SALEH, Bailey. “Empirical Comparison of Crude Oil Production of Africa’s Oil Producing Countries With the Organization of Petroleum Exporting Countries (OPEC), 2012-2019”. Nnamdi Azikiwe Journal of Political Science 10, no. 1 (March 3, 2025): 23–32. Accessed August 30, 2025. https://najops.org.ng/index.php/najops/article/view/298.