YANG, Yijie. Second-hand Trading Website Based on PHP. International Journal of Computer Science and Information Technology, U.K., v. 2, n. 2, p. 345–349, 2024. DOI: 10.62051/ijcsit.v2n2.40. Disponível em: https://wepub.org/index.php/IJCSIT/article/view/1592. Acesso em: 13 jul. 2026.