Ohazulike , Leo Atuchukwu, and Chendo Nkoli. “ The Essence of Business Management and Entrepreneurship in the Nigerian Marketing System ”. African Journal of Education,Science and Technology (AJEST) 1, no. 1 (January 9, 2013): Pg 259–268. Accessed May 15, 2026. https://ajest.org/index.php/ajest/article/view/314.