Umar, M.J., and U.B. Abdulmutallib. “Sales Promotion As a Tool for Improving Customer-Based Brand Equity in Kano Metropolis”. Kashere Journal of Education 3, no. 1 (June 16, 2022): 182–186. Accessed March 15, 2026. https://journals.fukashere.edu.ng/index.php/kje/article/view/961.