Mira, M., I. . Daud, L. . Ruwaida, M. Mahmud, and M. D. Ariani. “Effectiveness of Progressive Muscle Relaxation on Pain and Sleep Quality in Lung Cancer Patients Undergoing Chemotherapy: A Quasi-Experimental Study”. Journal of Applied Nursing and Health, vol. 7, no. 3, Nov. 2025, pp. 432-41, doi:10.55018/janh.v7i3.395.