OPARA, B. C.; OPARA, D. . N. C. Job Design and Service Delivery in Nigeria Manufacturing Firms. Nigerian Academy of Management Journal, [S. l.], v. 12, n. 1, p. 1–11, 2017. Disponível em: https://namj.tamn-ng.org/index.php/home/article/view/110. Acesso em: 3 apr. 2026.