AGU, G. A.; OKPARA, G. S.; OGWO, O. E. Service Quality in Non-Regular Undergraduate Programmes in Nigerian Universities (A Survey of Students in the South-East). Nigerian Academy of Management Journal, [S. l.], v. 12, n. 1, p. 132–148, 2017. Disponível em: http://namj.tamn-ng.org/index.php/home/article/view/121. Acesso em: 30 may. 2026.