Idris, Adamu Adamu, et al. “Impact of Shadow Economy on Tax Revenue in Sub-Saharan Africa”. FUDMA Journal of Accounting and Finance Research [FUJAFR] , vol. 2, no. 4, Nov. 2024, pp. 1-10, https://doi.org/10.33003/fujafr-2024.v2i4.130.1-10.