O. I. Esekpa, T. A. Ugbe, and P. C. Njok, “Assessing Labour Inefficiency: Preliminary Results for Human Capital Development Initiative Exploration and Production in Cross River State, Nigeria”, IJPMSSR, vol. 1, no. 4, pp. 46–61, Sep. 2025, Accessed: Feb. 04, 2026. [Online]. Available: https://transglobalpunet.com/index.php/ijpmssr/article/view/68