ROSPITA PANJAITAN; ESTER JULINDA SIMARMATA; ROSDIANA SAMOSIR. Health Optimization in Primary Schools: Instilling Handwashing Habits as a Proactive Step Towards a Healthy Learning Environment . Jurnal Pengabdian Masyarakat dan Riset Pendidikan, [S. l.], v. 2, n. 3, p. 206–210, 2024. Disponível em: https://jerkin.org/index.php/jerkin/article/view/246. Acesso em: 9 sep. 2026.