Pangestu, A. W., J. H. Sutawardana, Murtaqib, and Mustakim. “Breathe Better: The Role of Pursed Lips Breathing Therapy in Chronic Bronchitis Patients”. Jurnal Kegawatdaruratan Medis Indonesia, vol. 4, no. 1, Feb. 2025, pp. 104-4, doi:10.58545/jkmi.v4i1.344.