SUNARNO; YENTI, S. R.; FADLI, A.; WISRAYETTI, W.; AMRI, A. Making Natural Hand sanitizer Using Betel Leaf Plants (Piper betle Linn) and Lime (Citrus aurantifolia s.) for PKK Women in Tanjung Berulak Village . Journal of Community Engagement Research for Sustainability, [S. l.], v. 3, n. 2, p. 87–94, 2023. DOI: 10.31258/cers.3.2.87-94. Disponível em: https://cers.ejournal.unri.ac.id/index.php/cers/article/view/151. Acesso em: 4 nov. 2026.