Anung Aninditya Widodo, Joey. “The Effectiveness of Diaphragmatic Breathing on Shortness of Breath Levels in COPD Patients at Illasehat Clinic”. Jurnal Stethoscope 7, no. 1 (June 19, 2026): 1–11. Accessed October 8, 2026. https://ejurnal.stikesmhk.ac.id/index.php/JURNAL_ILMIAH_KEPERAWATAN/article/view/1097.