Abubakar, A., S. Z. Saidin, and A. Ahmi. “Performance Management Antecedents and Public Sector Organizational Performance: Empirical Evidence from Nigeria”. International Journal of Economics and Financial Issues, vol. 6, no. 7S, Nov. 2016, pp. 232-9, https://www.econjournals.com/index.php/ijefi/article/view/3614.