Jack-Osimiri, Ajichi Patrick, Rose Ohiama Ugbe, Anugbum Onuoha, Maureen Osullivan, and Prof. Uche Jack-Osimiri. “Enforcement of Informal Sector Taxation to Expand Revenue Base in Nigeria: A Review”. Commonwealth Law Review Journal 9 (February 8, 2025): 08/12/2023. Accessed April 30, 2026. https://journal.thelawbrigade.com/clrj/article/view/561.