Lubis, Lisnawati, Patimah Sari Siregar, Basri Basri, Dedek Sucahyo, and Evalatifah Nurhayati. “Effect of Chest Physiotherapy on Respiratory Effectiveness in Children With Pneumonia”. Jurnal Kesmas Prima Indonesia 9, no. 2 (July 25, 2025): 87–97. Accessed April 3, 2026. http://139.162.50.187/index.php/JKPI/article/view/7419.