SIREGAR, R. A.; MUHAMMAD HALMIDAR; ROHANI. Design a Web-Based Covid 19 Assistance Information System. Jurnal Mantik, [S. l.], v. 5, n. 1, p. 70-77, 2021. DOI: 10.35335/mantik.Vol5.2021.1267.pp70-77. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/1267. Acesso em: 31 aug. 2026.