RISMANA, D.; HARIYANTO, H. Perspektif Teori Sistem Hukum Dalam Kebijakan Vaksinasi di Tengah Pandemi Covid-19. Jurnal IUS Kajian Hukum dan Keadilan, [S. l.], v. 9, n. 3, 2021. DOI: 10.29303/ius.v9i3.951. Disponível em: https://jurnalius.ac.id/ojs/index.php/jurnalIUS/article/view/951. Acesso em: 10 nov. 2025.