Chukwu, Godswill Chinedu, Doris Ngirika, and Dukoye C. Igani. 2020. “Transparency As Key Indicator for Improving Sales Performance in the Telecommunication Sector (A Study of MTN Nigeria)”. Nigerian Academy of Management Journal 15 (4):67-79. https://namj.tamn-ng.org/index.php/home/article/view/9.