YUSTANTA, Brivian Florentis; IKHRIMA, Layudha. The Timeliness of Basic Immunization in Infants Related To The Knowledge About Covid-19. Procedia of Social Sciences and Humanities, [S. l.], v. 1, p. 11–18, 2021. DOI: 10.21070/pssh.v1i.2. Disponível em: https://pssh.umsida.ac.id/index.php/pssh/article/view/2. Acesso em: 1 jul. 2025.