KOFAR WAMBAI, Usman Sani; DERASHID, Chek; IBRAHIM, Idawati. A Conceptual Review of the Challenges of Effective Tax Collection from the Informal Sector in Kano, Nigeria. Journal of Business Management and Accounting, [S.l.], v. 9, n. 1, p. 1-13, may 2020. ISSN 2636-9249. Available at: <http://e-journal.uum.edu.my/index.php/jbma/article/view/8737>. Date accessed: 27 sep. 2020. doi: https://doi.org/10.32890/jbma2019.9.1.8737.