OKIAKPE, E. K., JONAH , N. M., & Godstime Nyema, C. (2026). OPERATIONAL COST CONTROL AND PROFITABILITY OF UPSTREAM OIL AND GAS FIRMS IN NIGERIA. Journal of Accounting Information and Innovation, 11(2), 1–11. Retrieved from http://cirdjournals.com/index.php/jaii/article/view/1477