Okechukwu I, E., and S. Chijioke Ugwu. “THE LAWS AND ADMINISTRATION OF RETIREMENT IN NIGERIA: A HISTORICAL APPROACH”. Arabian Journal of Business and Management Review (Kuwait Chapter), vol. 1, no. 2, Oct. 2011, pp. 1-10, https://j.arabianjbmr.com/index.php/kcajbmr/article/view/216.