OPARA, D. D. N. HUMAN RESOURCE SUPPORT SYSTEM AND ADMINISTRATIVE EFFECTIVENESS OF TERTIARY INSTITUTIONS IN SOUTH-SOUTH, NIGERIA. . BW Academic Journal, [S. l.], p. 12, 2023. Disponível em: https://mail.bwjournal.org/index.php/bsjournal/article/view/1440. Acesso em: 6 jun. 2026.