Ganiyu, R. A., I. I. Uche, J. Babatunde, and O. R. Obanla. “Spillovers of Local Content Policies in Nigerian Oil and Gas Industry”. Unilag Journal of Humanities, Vol. 6, no. 1, Apr. 2019, pp. 100-19, http://ujh.unilag.edu.ng/article/view/326.