Adam, A.-K., and E. S. Suleiman. “A Contextual Framework of Henry Fayol’s 14 Principles of Management for Public Sector Efficiency and Effectiveness of Policy Responsibilities by a Government”. Journal of Advanced Research in Business and Management Studies, vol. 11, no. 1, Oct. 2020, pp. 46-61, https://www.akademiabaru.com/submit/index.php/arbms/article/view/1291.