“APPLYING BETTY NEUMAN SYSTEMS MODEL IN THE MANAGEMENT OF A PATIENT WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE (COPD)”, FMHR, vol. 4, no. 3, pp. 4207–4211, Mar. 2026, Accessed: Sep. 21, 2026. [Online]. Available: https://fmhr.net/index.php/fmhr/article/view/3785