Ndudi, E. F., and A. A. Kifordu. “RELATIONSHIP MARKETING AND CUSTOMERS’ RETENTION IN THE NIGERIAN TELECOMMUNICATION INDUSTRY: A CUSTOMER-CENTERED APPROACH”. African Journal of Social and Behavioural Sciences, vol. 11, no. 1, May 2021, https://journals.aphriapub.com/index.php/AJSBS/article/view/1287.