OBOREH, L. E.; SAMUEL, A. P. An Analysis of Product Innovation and Competitive Advantage in Selected Plastic Manufacturing Industries in Onitsha, Anambra State, Nigeria. Gusau International Journal of Management and Social Sciences, [S. l.], v. 6, n. 3, p. 90–110, 2023. DOI: 10.57233/gijmss.v6i13.5. Disponível em: https://gijmss.com.ng/index.php/gijmss/article/view/181. Acesso em: 16 oct. 2025.