OGUNDIRAN, Samuel Ogunwale. Manpower Development: A Tool for Efficiency and Productivity of Employees. NIU Journal of Social Sciences, [S.l.], v. 4, n. 3, p. 201-209, nov. 2018. ISSN 3007-1690. Available at: <https://kampalajournals.ac.ug/ojs/index.php/niujoss/article/view/377>. Date accessed: 18 june 2026.