Wibrata, D. A. (2019) “THE EFFECT OF BREATHING EXERCISES: PURSED-LIPS BREATHING AND DIAPHRAGM BREATHING IN COPD PATIENTS”, International Conference of Kerta Cendekia Nursing Academy, 1(1). Available at: https://www.ejournal-kertacendekia.id/index.php/ICKCNA/article/view/73 (Accessed: 24 August 2026).