Appiah, M. K., Possumah, B. T., Ahmat, N., & Sanusi, N. A. (2018). Policy Environment and Small and Medium Enterprises Investment in the Ghanaian Oil and Gas Industry. International Journal of Energy Economics and Policy, 8(4), 244–253. Retrieved from https://mail.econjournals.com/index.php/ijeep/article/view/6598