Abomaye-Nimenibo , Williams Aminadokiari Samuel, and Ibimina Daminabo Amachree. “Production-Sharing and Service Contracts in Nigeria’s Upstream Petroleum Industry: How Effective Is Its Chargeability, Cost Recovery and Financial Reporting Suitability”. Direct Research Journal of Management and Strategic Studies, vol. 7, no. 2, Sept. 2026, pp. 35-46, https://doi.org/10.4314/drjmss.v7i2.1.