EKWONWUNE, E. N.; NGOZI A., D.; KANAYO K., U. Design of a web – based online Contract Administrative System platform of an Engineering firm. International Journal of Engineering and Computer Science, india, v. 8, n. 05, p. 24612–24620, 2019. DOI: 10.18535/ijecs/v8i05.4285. Disponível em: https://ijecs.in/index.php/ijecs/article/view/4285. Acesso em: 28 mar. 2024.