Eka Kartika, D. et al. 2022. The Effect of Progressive Muscle Relaxation (PMR) in Lowering The Pain Scale in Lung Cancer Patients Who Get Chemotherapy Treatment. Jurnal kesehatan komunitas (Journal of community health). 8, 1 (Apr. 2022), 27–31. DOI:https://doi.org/10.25311/keskom.Vol8.Iss1.1094.