Budiono, Budiono, Mustayah Mustayah, and Aindrianingsih Aindrianingsih. 2017. “THE EFFECT OF PURSED LIPS BREATHING IN INCREASING OXYGEN SATURATION IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN INTERNAL WARD 2 OF THE GENERAL HOSPITAL OF DR. R. SOEDARSONO PASURUAN”. Public Health of Indonesia 3 (3):117-23. https://doi.org/10.36685/phi.v3i3.132.