Implementation of the Topsis Method in Determining Online Shopping Options in the Marketplace. Vertex, [S. l.], v. 14, n. 2, p. 60–68, 2025. DOI: 10.35335/ckpd8y89. Disponível em: https://pub.iocscience.org/index.php/Vertex/article/view/109. Acesso em: 29 jul. 2026.