THE EFFECT OF PURSED LIP BREATHING (PLB) EXERCISE ON RESPIRATORY STATUS IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD). Jurnal Perawat Indonesia [Internet]. 30 Mei 2023 [dikutip 24 Januari 2026];7(1):1259-65. Tersedia pada: https://journal.ppnijateng.org/jpi/article/view/2180